Spyder Tire Preasures

[RoadHammer]

I am going to put my 3rd rear tire on and I am 6k for miles, it is pissing me off having to change them all the time. I was wondering if anyone has tried to go with a 205 or 215 tire, I noticed that the tire I am putting on weights 23 lbs,I thought that motorcyle tires weighted like 9 lbs so if it weights less can't you get more out of it.

hahaha right on Seth, ride it like ya stole it !!!!! I have a feeling i'll be going through a tire sooner than later...

 

[Al Bragg]

20 up fronts 30 for the rear

 

[jedd]

:roflblack::roflblack::roflblack::roflblack:LOOK AT MY AVAITAR NO BURN-OUTS FOR ME:roflblack:hyea::yes::firstplace::doorag:

 

[SethO]

you ride too hard

Well on my zx12rr with 195 rear tire hp will get 5k out of a rear with 180/55/r17 michellin road pilot's so how is it a f'ing car tire can get 2k out of a 109 hp bike with a belt drive that only weights 750 lbs. that is what I am pissed off about, also if I power braked the thing all the time then yes I would say I get it. I just put an hankook sr2 on there and it was suppose to put 51 psi in max so I am running it at 38psi and see it how it goes. To say that the way I ride the thing eats the rear tire is redickulous. I am riding this thing because I can't ride my 12 right now, not saying there is anything wrong with the touring aspects of the spyder but the preformance aspect could be improved.

 

[Dudley]

Well on my zx12rr with 195 rear tire hp will get 5k out of a rear with 180/55/r17 michellin road pilot's so how is it a f'ing car tire can get 2k out of a 109 hp bike with a belt drive that only weights 750 lbs. that is what I am piss off about, also if I power braked the thing all the time then yes I would say I get it. I just put an hankook sr2 on there and it was suppose to put 51 psi in max so I am running it at 38psi and see it how it goes. To say that the way I ride the thing eats the rear tire is redickulous. I am riding this thing because I can't ride my 12 right now, not saying there is anything wrong with the touring aspects of the spyder but the preformance aspect could be improved.

Ok, I won't say it's the way you ride it. But if it's only you riding it, who is wearing out the rear tire? The Spyder itself will not wear out your rear tire. And if one certain rider can get 13,000 miles out of a rear tire and he rides like the devil was after him...well, here's your sign!

 

[SethO]

Ok, I won't say it's the way you ride it. But if it's only you riding it, who is wearing out the rear tire? The Spyder itself will not wear out your rear tire. And if one certain rider can get 13,000 miles out of a rear tire and he rides like the devil was after him...well, here's your sign!

ahh yes efights, I would like to show you the difference between the devil chasing him and me.
I am not looking for a comparison of riding styles I am lookin for a answer to the question of if you push it thru the corners and ride it full out why does it just the rear tire. If you had a shop answer for example the tire rubber was burned off the edges or the carcass was heated up so you could say it yes this why the tire is degrading so fast. Crusier tires hold up better because of the harder compound tire with less power applied so what is the malfuction of the tires on the spyder? I get my tires will last less than someone touring on a spyder but 2k?? come on, 5k is what I thought from my riding expirence it would be at.

 

[Dudley]

ahh yes efights, I would like to show you the difference between the devil chasing him and me.
I am not looking for a comparison of riding styles I am lookin for a answer to the question of if you push it thru the corners and ride it full out why does it just the rear tire. If you had a shop answer for example the tire rubber was burned off the edges or the carcass was heated up so you could say it yes this why the tire is degrading so fast. Crusier tires hold up better because of the harder compound tire with less power applied so what is the malfuction of the tires on the spyder? I get my tires will last less than someone touring on a spyder but 2k?? come on, 5k is what I thought from my riding expirence it would be at.

Seth, this is not an efight. You ride the Spyder, you wear out your rear tires. It may be easier because of the tire compound, but that's the nature of the tire. Probably if you continue to ride the way you do, you will continue to go through tires like butter. And why just the rear tire??? Could it be that's because it's a rear wheel drive???

 

[DragonSpyder]

I only got 7K outta my rear tire. I had it at 30Lbs and dropped to 28Lbs. Towards the end I noticed considerable wear in the middle so I dropped to 24Lbs. No burnouts but do ride aggresive!

I have about 1K miles on the new tire at 26Lbs and it is already to the first wear mark in the middle. How is it possible that some are running 30Lbs and they are not wearing in the middle?

 

[ataDude]

... answer to the question of if you push it thru the corners and ride it full out why does it just the rear tire...

Even on my two-wheelers, I always used up about two rear tires to one front. On my Spyder, it's more like three rears to one front set.

Here's what I think... on heavy acceleration with speed shifts, you are actually slipping the rear tires some. On deceleration with downshifts, you're slipping them more. If you're riding the twisties, you're doing this continuously.

With a new tire with good tread, I can actually hear the "chirps" as I shift into second and sometimes third.

On downshifts, I try to do better about feathering the clutch, but am not always successful... more focused on setting up for the next curve.

My $0.02. And, this is a freebie: You can, and should, communicate here without the various "f-ings" thrown in. They add nothing to your question or response.

 

[NancysToy]

My $0.02. And, this is a freebie: You can, and should, communicate here without the various "f-ings" thrown in. They add nothing to your question or response.

:agree:...........please!
-Scotty

 

[SPYDERPOPS]

I do beleive that on a real hot day your pressure could grow by 3-4 lbs. when it gets hot. This could be a real factor for wear in the middle. I put mine at the 20-30 range Sunday and rode 300 mi. to find out that they rode very ruff to me. I'm going to put them back to 15-28 and realize that when it's 95-100 degrees that they are actually running around 18-30 hot rather than 23-33.

To know for sure tire temps will have to be taken across the tread to be accurate. I will bring my probe on our trip to CA and do some checking on everyones tires when they are hot. If the tire temps are the same across three points then the pressure is correct.

Well, that's my 3 lbs. worth.
HC

 

[spyryder]

I only got 7K outta my rear tire. I had it at 30Lbs and dropped to 28Lbs. Towards the end I noticed considerable wear in the middle so I dropped to 24Lbs. No burnouts but do ride aggresive!

I have about 1K miles on the new tire at 26Lbs and it is already to the first wear mark in the middle. How is it possible that some are running 30Lbs and they are not wearing in the middle?

:agree:
I've only got 23 in mine and it still looks like more wear in the middle.

 

[bone crusher]

IMO 15 up front is too low, and 15 minus 2 psi would be below the rated minimum for the tire, as printed on the sidewall. I know what their engineers say, but I am more concerned about what the tire manufacturers say. let's not forget the Ford Explorer mess. More comfortable erring on the side of caution. As far as vehicle stability goes, more pressure seems to have helped the Spyder, rather than hurt. No problems with VSS kicking in thus far.
-Scotty

I thought my dealership had checked my tires at last service, but I recently checked them and was at 10 and 13 in the front, 25 in the rear.

Wow! Talk about soft ride...bumped the fronts to 20 and the rear to about 29.

I now undoubtedly have better traction and my mileage is up a little as well...then again, with green filter, it's up even more! :2excited:

 

[bone crusher]

You may not like this answer, but if you are on your third tire and you wonder why, ask yourself why you are the only one changing it so often. I don't know what your driving habits are, but tires have a life directly related to your driving habits. If you like the way you ride, and continue to do so, keep changing tires. I don't think there is a tire made that will last you. From the posts on this forum, the overall average is probably 10,000+/- miles. From the looks of my tire with 10,000 miles, I will probably get 20,000 miles.

:agree:hyea:

 

[Dudley]

Further Toughts on the Matter

OK, here is something I have been thinking for some time about rear tire wear on our Spyders. I will use easy rounded numbers for mathamatical symplicity. Let's say that the total weight of the Spyder with rider is 900 pounds. So, because the engine if front of center, let's assume that the front axles weight is 600 pounds, leaving 300 pounds for the rear. So, the total weight resistance to ground is 600 front, 300 rear. When you throttle the Spyder, a rear tire with 300 pounds resistance to ground is trying to move a front end with 600 pounds resistance. The one rear tire has to do all the work to move the Spyder. I wish I had a high speed camera to mount off the rear fender to see what happens when a hard throttle is applied. I believe the center of the tire will bulge outward somewhat because the rear is so much lighter. This would cause the mysterious "wear in the center" question we have. Not all tires are wearing the same, as in no two riders ride the same.
Now, if anyone has a scale that can weigh their Spyder with them on it; total weight, rear axle weight and front axle weight, then we can have actual weight differences per axle instead of theoretical. Maybe together we can come up to a better understanding of what is happening.

 

[mtdoragary]

I'm with Scotty on this!

I would hesitate to assume anything. Vehicle engineers recommend pressures based on numerous factors, including ride comfort. The Ford Explorer tire recall, and subsequent change of the recommended tire pressures for that vehicle, is a classic example of getting it wrong. In this case, there is adequate reason to wonder, since the BRP recommendation includes pressures below the minimum stated on the tire sidewall! I certainly would not recommend running pressures outside the tire manufacturers requirements, no matter what BRP engineers may have recommended.
-Scotty

 

[johnnyg]

MY 2013 ST 28F-- 30R, Wife's 2011 RS 26F--26R.