Those that have replace your rear tire on your RT?

[tehrlich]

To me its a different strokes kind of thing unless there is something really unsafe going on. Not really the case here.

Yes, I generally start folks off at 18 and 24 on the Yokos if they have never had them before.

I run 26 to 28 in the front and 24 or so in the rear. Took me a while to get where I was most comfortable with them. I also ride a much lighter F3S compared to tehrlich's RT and our riding styles are obviously different. Does not make either really wrong. Does it really matter if the tires get every last mile they are capable of if the rider LIKES and is more confident with a slightly different pressure that is still well within the allowable range?

I will say the higher pressures in the front do not seem to make the yokos balloon and wear in the center. They still wear even. The rear is a little more effected by the pressure on the wear pattern.

I will also say that after a few thousand miles of Colorado twisties on the set of 3 yokos, they are a BIG step up from the Kenda's

Exactly. NEWBIES.... just read this from Jim.

Go to his website. Get work done by him. Understand that he knows a lot about Spyders, and physics.

But, as far as I know, he has not won a sanctioned drag race. Readers can decide.

[cruisinTX]

The time has come for me to replace the rear tire on our 2014 RT Limited. I have read every post in this thread as well as some in other threads. I have also done considerable research on tires in general. Based on all of that (especially input from some of the more experience folks here), I have decided to listen to the beat of a different drummer. But the beat is only slightly different. I've ordered a Yokohama Envigor in 205/65R15. That's the "slightly different" part as there seems to be a lot of folks liking the Yokohamas but I have yet to see any mention of the Envigor. I also chose that particular size because of some feedback I got through private messages about correcting the speedometer error when using the Gerneral Altimax RT43 in 215/60. If I have calculated correctly, the 205/65 should have the speedo of an RT spot on at 70mph. The choice in that particular tread pattern was made based on several things like water-shedding design, UTQG rating (stickiness/softness) and size availability to name just a few.

I'm hoping the tire will be here soon enough for me to get it mounted before Thanksgiving. If not, OH WELL. I do plan on reporting back here once I have a few thousand miles on it and maybe 10000 mile updates as they occur.

ride safe & smart everyone!

[jcthorne]

Exactly. NEWBIES.... just read this from Jim.

Go to his website. Get work done by him. Understand that he knows a lot about Spyders, and physics.

But, as far as I know, he has not won a sanctioned drag race. Readers can decide.

Got me there. Been in a few drag races but.....well, that's for another day.

[tehrlich]

Got me there. Been in a few drag races but.....well, that's for another day.

Would you consider drag racing more dangerous than running your tires at higher PSI's on a daily basis? LOL.

I rode about an hour last night on Highway 71 towards Llano, Texas. Good road. Dry. About 59-62F.

Did two stops to measure heat across our "over-inflated" tires with infrared . There was virtually no difference of temperature from the edges to the corners on the FRONT Yokohoma's at 26psi. Maybe 1 degree up or down. Depended on weather my measurement was on a groove or not.

Ironically, the REAR Yokohama tire had the difference at 28psi. The CORNERS were actually about 8-9 degrees hotter than the center. Go figure. With everything I've read, I've been dangerously ballooning the tires.

Granted, I need to do a longer and harder ride, and more measurements, but this was interesting. Will do more soon, and I did calibrate the emissivity for hard rubber.

[tehrlich]

I did a longer ride of 139 miles today and measured the psi and heat readings of each tire along the way. Ambient temperature was 75F and dropped to 65F the last 30 minutes of my ride because the sun went down. Dry conditions.

Before I left, I measured and put all three YOKOHAMA tires at 26psi and measured the infrared heat from the corners and the center of the tire. I always measured the right front tire first, the left front tire second, and the rear as last. In all the measurements during the ride, I tried to get off the Spyder and measure the heat signatures quickly. (The other day when measuring the heat, I noticed that the temperatures can drop quickly.) Initially, the rear tire was warmer than the fronts because it was sitting in the sun in my garage.
IMG_2064.jpg
I rode 62 miles through the Texas hill country on Highway 12 through Wimberley and over to Blanco. Stopped at Blanco and did the first reading. Probably averaged around 50mph with various roads, towns, stoplights, etc. The psi in the front tires went to 28psi and the rear to 28.5psi. This was the HIGHEST that I registered for the ride. Granted, a bit here and there was lost during measurement, but I tried to register all psi's as fast as I could. Temperatures were also the HIGHEST that I registered for the trip. The right front tire was a bit hotter than the left front tire, but this was probably due to the time it took to measure the first. (Temperatures drop quickly once stopped.) The rear tire was about 10F hotter than the fronts (103.0F.) All three had less than 2F differences across the surfaces: corners and middle.

The second leg of the ride was straight up Highway 281 and west on Highway 71 just south of Marble Falls. This highway is most 4 lanes and divided occasionally. Easy to hit 85mph. The next round of 45 miles was probably averaged at 65-70mph. On that measurement interval, the psi's of all three tires went to 27.5psi. Temps of fronts were consistent across their surface. The middle of the rear raised by one degree (104.0F) from the prior reading, and the corners went down about one degree F.

The third leg of the ride to my home was 32 miles through windy farm roads, cattle guards, and dry low water crossings. It finished with about 10 minutes of 75mph on Highway 71 into Spicewood. My wife was blocking the driveway with her car and it took me a few minutes to coax her along her way so I could take the measurements in my garage. Psi's dropped on all three and temperatures were consistent about 2 degrees across. The rear had the center drop more than the corners! The entire tire dropped in temperature 7-10F from the prior reading.

I finished the measurements and steamed some tamales from the grocery store. In Texas, even grocery store (HEB) has great generic Mexican food. Then sat down to write this up with a freshly poured Guinness! Multicultural evening!
IMG_2065.jpg

[tehrlich]

In summary, the entire 139 miles and most of a tank of gas had 2psi change at the most for the fronts, 2.5 psi for the rear. Plus, this was at only one reading. The rest of the ride had a lower change from the baseline psi.

Temperatures across the tire were not that much different for the fronts, and minimal on the rear.

Tamales and Guinness are a great combination.

[BLUEKNIGHT911]

Would you consider drag racing more dangerous than running your tires at higher PSI's on a daily basis? LOL.

I rode about an hour last night on Highway 71 towards Llano, Texas. Good road. Dry. About 59-62F.

Did two stops to measure heat across our "over-inflated" tires with infrared . There was virtually no difference of temperature from the edges to the corners on the FRONT Yokohoma's at 26psi. Maybe 1 degree up or down. Depended on weather my measurement was on a groove or not.

Ironically, the REAR Yokohama tire had the difference at 28psi. The CORNERS were actually about 8-9 degrees hotter than the center. Go figure. With everything I've read, I've been dangerously ballooning the tires.

Granted, I need to do a longer and harder ride, and more measurements, but this was interesting. Will do more soon, and I did calibrate the emissivity for hard rubber.

Whoever coined the phrase " Ignorance is BLISS " had someone on this post in mind ........ I'm not the one though ... ......... and instead of thinking up cute Attack verbiage, take the basic course in " Accident Investigation " .... and if you pass it ....take the " Advanced Investigation " course and if pass that, you & I can have an " Intelligent " discussion about tire pressures..... But if you take these courses you will understand and also agree with me on what I have been recommending...... However I'm SURE you will have something less than enlightening to comment about this post ....... Mike

[tehrlich]

Whoever coined the phrase " Ignorance is BLISS " had someone on this post in mind ........ I'm not the one though ... ......... and instead of thinking up cute Attack verbiage, take the basic course in " Accident Investigation " .... and if you pass it ....take the " Advanced Investigation " course and if pass that, you & I can have an " Intelligent " discussion about tire pressures..... But if you take these courses you will understand and also agree with me on what I have been recommending...... However I'm SURE you will have something less than enlightening to comment about this post ....... Mike

So, the mantra of SpyderLovers.com is to just believe only what you say? How does anyone feel comfortable with posting next to your red font, over use of emoji's, and self-aggrandizement?

Do the moderators of this forum not WANT discussion? Surely, this is not the first time for someone to complain of this treatment.

Newbies: just do what he says. He has more posts than me and has won a sanctioned drag race with a Spyder. I've never questioned his "training," whatever that may be. But, it is impossible to have an opinion as long as it is not the same as his.


But, when someone is actually trying to show that the tire pressures that I have set, and others have set, actually work FOR US, I get the RED FONT treatment and emoji explosion.


Peter Aawan.... do you not agree that tire temperature readings matter regarding inflation?

[tehrlich]

I am not an expert on tire pressures, but I can read recommendations from expert organizations. I just read the U.S. Tire Manufacturers Association free publication titled, "Care and Service of Passenger and Light Truck Tires."

Excellent information! You can find it here.

I did NOT realize how concerned they are about UNDER inflated tires! You will read for yourself in multiple locations where they WARN of under inflated tires and the potential of internal damage from HEAT build up.

There are WARNING boxes through out the article like this:
Warning Tire Pressure.jpg

Woah! It seems to me that if the US Tire Manufacture Association goes THIS FAR to make a consumer awareness article, they would say EXACTLY what they are concerned MOST with! In MANY locations it discusses how under-inflated tires is a great concern. Even in the big WARNING box above it says that! The warning box says over inflated tires can have higher chance of puncture. Hmmm.... What the heck?

Why would they have not listed traction control with higher pressurized tires in that warning box? (Maybe that isn't their primary concern!)

How does anyone truly KNOW if 14psi is NOT TOO low for these CAR tires on our MOTORCYCLES? Where does that number come from? Studies? Repeated cross-sectional analysis of rubber (natural, synthetic and filler)degradation and tire ply distortion? Or, somebody on an internet forum?


Wow. Now that I've read this entire article, I'm very concerned that too many of us may be under inflating our car tires on our motorcycle. I have no idea, but the US Tire Manufacturer Association has great concerns!

Warning Tire Pressure under inflation.jpg

ANOTHER big warning box in the same article! It focuses on three things:
1. Underinflation. Don't do it!
2. Over loading the vehicle. That's unlikely with our Spyders.
3. Consult the vehicle placard. Um.... we are using tires that BRP does NOT recommend! So, that makes it invalid, right?



Down below is the only reference that I found in the entire 54 page publication that mentions over inflation of a tire leading to reduced traction. BUT, how do we know what pressure these CAR TIRES have become OVER INFLATED on our MOTORCYCLE? Are we guessing, assuming, postulating, or examining? My guess is that it is a guess from some individuals on this forum. Granted, it can be an educated guess, but a guess nonetheless. Do you know the measurements for "traction" are done in a stopping straight line and NOT in cornering! Things that make you go hhmmmmm...


Improper Tire Inflation
For optimum service, use the inflation pressures specifiedby the vehicle manufacturer on the vehicle tire placard,certification label or owner’s manual. Under inflation mayresult in rapid and/or abnormal tread wear, improper vehiclehandling and decreased fuel economy. Over inflation canalso result in rapid and/or abnormal tread wear, decreasedtraction and premature wear of suspension components.Improper tire inflation may cause a tire failure, includingtread/belt separation, even at a later date, which can leadto an accident and serious personal injury or death. Checkand adjust tire pressure (including the spare) at least onceper month with a pressure gauge (see “Proper Tire Inflation”on p. 11).

"Improper vehicle handling!" Wow... That's exactly what my butt felt when I tried putting my Yokohamas at 17psi. I even described it with what happened during a turn in an earlier post. It seems that the US Tire Manufactures Association may agree with my butt. LOL.

There was NO reference in the article (that I found) that warns over inflated tires cause heating and internal damage. Just toughness to puncture, and one reference to reduced traction. But, again, how do we know our psi's are putting the tire in an "over inflated" state?

Well, someone will postulate that the recommended tire pressures by the manufacturer should be followed. Um, OK. the manufacturer doesn't put these tires on our vehicles, AND there are plenty of reasons why that recommended inflation amount MAY NOT be the optimal tire pressure. They can be influenced by other things besides performance. That's another easy internet search away for those that want to read.


So, my take on reading this article is that LOW PSI tire users should REALLY monitor their heat build-up. It can degrade the tire components internally, and you may not realize it.

[BLUEKNIGHT911]

I am not an expert on tire pressures, but I can read recommendations from expert organizations. I just read the U.S. Tire Manufacturers Association free publication titled, "Care and Service of Passenger and Light Truck Tires."

Excellent information! You can find it here.

I did NOT realize how concerned they are about UNDER inflated tires! You will read for yourself in multiple locations where they WARN of under inflated tires and the potential of internal damage from HEAT build up.

There are WARNING boxes through out the article like this:
Warning Tire Pressure.jpg

Woah! It seems to me that if the US Tire Manufacture Association goes THIS FAR to make a consumer awareness article, they would say EXACTLY what they are concerned MOST with! In MANY locations it discusses how under-inflated tires is a great concern. Even in the big WARNING box above it says that! The warning box says over inflated tires can have higher chance of puncture. Hmmm.... What the heck?

Why would they have not listed traction control with higher pressurized tires in that warning box? (Maybe that isn't their primary concern!)

How does anyone truly KNOW if 14psi is NOT TOO low for these CAR tires on our MOTORCYCLES? Where does that number come from? Studies? Repeated cross-sectional analysis of rubber (natural, synthetic and filler)degradation and tire ply distortion? Or, somebody on an internet forum?


Wow. Now that I've read this entire article, I'm very concerned that too many of us may be under inflating our car tires on our motorcycle. I have no idea, but the US Tire Manufacturer Association has great concerns!

Warning Tire Pressure under inflation.jpg

ANOTHER big warning box in the same article! It focuses on three things:
1. Underinflation. Don't do it!
2. Over loading the vehicle. That's unlikely with our Spyders.
3. Consult the vehicle placard. Um.... we are using tires that BRP does NOT recommend! So, that makes it invalid, right?



Down below is the only reference that I found in the entire 54 page publication that mentions over inflation of a tire leading to reduced traction. BUT, how do we know what pressure these CAR TIRES have become OVER INFLATED on our MOTORCYCLE? Are we guessing, assuming, postulating, or examining? My guess is that it is a guess from some individuals on this forum. Granted, it can be an educated guess, but a guess nonetheless. Do you know the measurements for "traction" are done in a stopping straight line and NOT in cornering! Things that make you go hhmmmmm...


Improper Tire Inflation
For optimum service, use the inflation pressures specifiedby the vehicle manufacturer on the vehicle tire placard,certification label or owner’s manual. Under inflation mayresult in rapid and/or abnormal tread wear, improper vehiclehandling and decreased fuel economy. Over inflation canalso result in rapid and/or abnormal tread wear, decreasedtraction and premature wear of suspension components.Improper tire inflation may cause a tire failure, includingtread/belt separation, even at a later date, which can leadto an accident and serious personal injury or death. Checkand adjust tire pressure (including the spare) at least onceper month with a pressure gauge (see “Proper Tire Inflation”on p. 11).

"Improper vehicle handling!" Wow... That's exactly what my butt felt when I tried putting my Yokohamas at 17psi. I even described it with what happened during a turn in an earlier post. It seems that the US Tire Manufactures Association may agree with my butt. LOL.

There was NO reference in the article (that I found) that warns over inflated tires cause heating and internal damage. Just toughness to puncture, and one reference to reduced traction. But, again, how do we know our psi's are putting the tire in an "over inflated" state?

Well, someone will postulate that the recommended tire pressures by the manufacturer should be followed. Um, OK. the manufacturer doesn't put these tires on our vehicles, AND there are plenty of reasons why that recommended inflation amount MAY NOT be the optimal tire pressure. They can be influenced by other things besides performance. That's another easy internet search away for those that want to read.


So, my take on reading this article is that LOW PSI tire users should REALLY monitor their heat build-up. It can degrade the tire components internally, and you may not realize it.

....Thank you for this information it is enlightening to say the least ...... I am now going to inflate my tires ( car tires ) to the Maximum recommended on the sidewalls ( about 44psi ) ........... annnnnnnnnnnnd you have convinced me that all my training from so-called Experts in this field have been throwing BS big time and I will dis-regard anything they taught me ........My big regret now is I can't undo all the Court rulings that were decided on my testimony by Juries .... I'm also contemplating returning the 10's of thousands of dollars I received in payment for my " ALLEGED " Expert testimony..... You should be VERY, VERY proud of yourself for un-covering this massive hoax that I've been perpetrating on our fellow Spyderlover's ..... I do have a question though .... In the " US Manufacturers Association's 54 page publication about Care and service of Passenger & light truck tires .... I didn't find any mention of lightweight ( or otherwise ) Can-am Spyder's ....WHY do you think they omitted that ..... your response doesn't have to be Fact based .... In your case a GUESS will do ........ Mike

[Richardv]

I am not an expert on tire pressures, but I can read recommendations from expert organizations. I just read the U.S. Tire Manufacturers Association free publication titled, "Care and Service of Passenger and Light Truck Tires."

Excellent information! You can find it here.

I did NOT realize how concerned they are about UNDER inflated tires! You will read for yourself in multiple locations where they WARN of under inflated tires and the potential of internal damage from HEAT build up.

There are WARNING boxes through out the article like this:
Warning Tire Pressure.jpg

Woah! It seems to me that if the US Tire Manufacture Association goes THIS FAR to make a consumer awareness article, they would say EXACTLY what they are concerned MOST with! In MANY locations it discusses how under-inflated tires is a great concern. Even in the big WARNING box above it says that! The warning box says over inflated tires can have higher chance of puncture. Hmmm.... What the heck?

Why would they have not listed traction control with higher pressurized tires in that warning box? (Maybe that isn't their primary concern!)

How does anyone truly KNOW if 14psi is NOT TOO low for these CAR tires on our MOTORCYCLES? Where does that number come from? Studies? Repeated cross-sectional analysis of rubber (natural, synthetic and filler)degradation and tire ply distortion? Or, somebody on an internet forum?


Wow. Now that I've read this entire article, I'm very concerned that too many of us may be under inflating our car tires on our motorcycle. I have no idea, but the US Tire Manufacturer Association has great concerns!

Warning Tire Pressure under inflation.jpg

ANOTHER big warning box in the same article! It focuses on three things:
1. Underinflation. Don't do it!
2. Over loading the vehicle. That's unlikely with our Spyders.
3. Consult the vehicle placard. Um.... we are using tires that BRP does NOT recommend! So, that makes it invalid, right?



Down below is the only reference that I found in the entire 54 page publication that mentions over inflation of a tire leading to reduced traction. BUT, how do we know what pressure these CAR TIRES have become OVER INFLATED on our MOTORCYCLE? Are we guessing, assuming, postulating, or examining? My guess is that it is a guess from some individuals on this forum. Granted, it can be an educated guess, but a guess nonetheless. Do you know the measurements for "traction" are done in a stopping straight line and NOT in cornering! Things that make you go hhmmmmm...


Improper Tire Inflation
For optimum service, use the inflation pressures specifiedby the vehicle manufacturer on the vehicle tire placard,certification label or owner’s manual. Under inflation mayresult in rapid and/or abnormal tread wear, improper vehiclehandling and decreased fuel economy. Over inflation canalso result in rapid and/or abnormal tread wear, decreasedtraction and premature wear of suspension components.Improper tire inflation may cause a tire failure, includingtread/belt separation, even at a later date, which can leadto an accident and serious personal injury or death. Checkand adjust tire pressure (including the spare) at least onceper month with a pressure gauge (see “Proper Tire Inflation”on p. 11).

"Improper vehicle handling!" Wow... That's exactly what my butt felt when I tried putting my Yokohamas at 17psi. I even described it with what happened during a turn in an earlier post. It seems that the US Tire Manufactures Association may agree with my butt. LOL.

There was NO reference in the article (that I found) that warns over inflated tires cause heating and internal damage. Just toughness to puncture, and one reference to reduced traction. But, again, how do we know our psi's are putting the tire in an "over inflated" state?

Well, someone will postulate that the recommended tire pressures by the manufacturer should be followed. Um, OK. the manufacturer doesn't put these tires on our vehicles, AND there are plenty of reasons why that recommended inflation amount MAY NOT be the optimal tire pressure. They can be influenced by other things besides performance. That's another easy internet search away for those that want to read.


So, my take on reading this article is that LOW PSI tire users should REALLY monitor their heat build-up. It can degrade the tire components internally, and you may not realize it.

I have been wondering for a long time......why don't we have solid tires? Why do the tires manufacturers bother to publish tire inflation charts? ..... with rubber filled tires we would avoid tire flexing, overheating, tire puncture....and all the likes.!!!!

Also, another question for you, on those little, as light as possible cars called F1, why don't they inflate the tires to 35 - 40 psi. That way the tires won't heat, right. Ha darn, another question, why do they take time to do warm up laps to bring the tires up to operational temperatures.....???? just wondering.....

PLEASE HELP !!!!! save us all....!!!!