I've found that I like the way the RT rides with tire pressures slightly higher than what Can Am recommends. I was keeping 20 in front, 30 in rear. But yesterday which was quite warm, near the end of a 3 hour ride, my TPMS app (FOBO2 Bike) warned me that the rear tire pressure was at 36, which I had previously set as the upper warning level. I was a bit surprised that riding raised the pressure that much, so today I let a bit of air out and lowered the pressures to 19 in front, 29 in rear. This all made me wonder what the upper limit for the stock tires would be.
-
There were many reasons for the change of the site software, the biggest was security. The age of the old software also meant no server updates for certain programs. There are many benefits to the new software, one of the biggest is the mobile functionality. Ill fix up some stuff in the coming days, we'll also try to get some of the old addons back or the data imported back into the site like the garage. To create a thread or to reply with a post is basically the same as it was in the prior software. The default style of the site is light colored, but i temporarily added a darker colored style, to change you can find a link at the bottom of the site.
Tire pressures in hot weather
- Thread starter vito1943
- Start date
As you've noticed tire pressures can vary greatly given different ambient conditions. If you've read any of the many threads on this site you'll find that opinions come from many directions and for many reasons. And yes the tyreguru's have narrowed down the parameters based on safety and longevity. It's about an even split between those who prefer one pressure over another pressure. Use your FOBO's to adjust your particular pressures to your riding style and likes and stick with them. 36 PSI in the rear OEM tire will rapidly wear down the center of your tire. Ride happy.
Mikey
Well-known member
For one thing if I was you, having the fobo is a great idea, check the pressure before a ride and make sure you're in your happy zone, but you have to remember that air temp is going to change things a little , and riding it will do the same!! You will drive yourself nuts if you watch it like a hawk, use it as a guide, ride more, worry less, smell the roses!!!
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
For clarification I differ on the PSI 's affecting the wear for KENDA tires in that ..... 90% of tire wear for Kenda Spyder tires has to do with the construction of the tire. Folks here have used various PSI's plus or minus as much as 6 , and the results for tire wear remain pretty consistent no matter what the PSI is ..... The WEAK construction allows the Tire to Balloon at speeds over about 35 mph, and this is the main cause for wear ...... This occurs predominantly for the REAR tire because it's a lot wider than the fronts. .... I have always said " excessive wear for the fronts " is almost always an Alignment issue. Wear when using Kenda tires ( on the fronts only ) is usually pretty decent, but Auto tires will last longer , even the softer compound Auto tires ...... JMHO ...... Mike :thumbup: ..... I'll let Peter chime in of the PSI / Temperature thing ....:thumbup:
Last edited:
My point was that no matter what PSI you run in the Crapenda it's going to prematurely wear down the center tread of that tire. I think it's just about a dead horse now but BRP continues to mount them on their machines. My sinking feeling is, and truly hope not, that some unaware spyder owner is going to suffer a blowout and crash their spyder because they never thought their rear tire would wear down so quickly. Most cars get 50/60k on tires these days and who (unknowingly) wouldn't think a spyder couldn't get the same?
Lew L
Well-known member
"Air gets more dense, when hot." I'm not too sure about that -------- In an enclosed vessel the pressure will certainly go up. Air molecules move faster at higher temps, attempting to push further apart( lower density) but higher pressure.
I could be wrong of course, ask your local chemist about Boyle's gas laws.
Lew L
To respond to your title question; YES! Temperature can affect tire pressure. The TPMS in my truck always shows at least a 3 psi difference between the side in the shade vs in the sun. Once I start driving down the road and the tires heat up from friction, pressure differential goes away.
Bottom line is for stock tires on any vehicle ALWAYS go with the manufacturers' recommendations, or pay the price, one way or another. Tire pressures should always be set to specs when COLD, never directly after a trip when they're going to have elevated temperature and therefore pressure.
Bottom line is for stock tires on any vehicle ALWAYS go with the manufacturers' recommendations, or pay the price, one way or another. Tire pressures should always be set to specs when COLD, never directly after a trip when they're going to have elevated temperature and therefore pressure.
Last edited:
:agree:
Peacekeeper6
Member
I have to agree with you, Lew. Cars and bikes tend to run a bit quicker when it's colder because the air is MORE dense.
And a baseball that is hit when it's in the 90s will travel just a bit further than when it's hit in the 40s. Why ??
Because it is less dense.
Isopedella
Well-known member
This is what Peter advised me when I asked the pressure question. Hope it helps.
The majic number it seems is 4 psi gain after its all warmed up from cold
Here is Peters short version. :roflblack:
"16 - 18 psi up front to start with, but please bear in mind that with radial tires, harder/more direct steering DOES NOT necessarily mean you are getting better traction &/or control, so to erroneously chase that firmer/more direct 'feel' to the detriment of handling, ride, and wear et al from your tires is really not such a great idea!
Many people have become used to that 'firmer ride' thing thru driving on over-inflated &/or lower profile tires, but the reality is that radial tires in particular NEED to flex somewhat in order to keep the contact patch firmly on the ground and work their best for you, altho going too low is also a risk! So start with your cold start tire pressures at 18 psi & look for a 4psi increase after an hour's riding - LESS than a 4psi increase means your cold start pressure was too HIGH, drop a psi out before your next ride; while MORE than a 4psi increase means your cold start pressure was too LOW, so add a psi before your next ride. Altho the vast majority of Spyders & the tires they can wear will easily fall within that 16-18 psi range, spending a little bit of time now in getting close to the ideal pressure for YOU & YOUR riding, load, surfaces, etc will pay you back in better ride, handling, traction, puncture resistance, tire life et al throughout the tire's life..... "
The majic number it seems is 4 psi gain after its all warmed up from cold
Here is Peters short version. :roflblack:
"16 - 18 psi up front to start with, but please bear in mind that with radial tires, harder/more direct steering DOES NOT necessarily mean you are getting better traction &/or control, so to erroneously chase that firmer/more direct 'feel' to the detriment of handling, ride, and wear et al from your tires is really not such a great idea!
Many people have become used to that 'firmer ride' thing thru driving on over-inflated &/or lower profile tires, but the reality is that radial tires in particular NEED to flex somewhat in order to keep the contact patch firmly on the ground and work their best for you, altho going too low is also a risk! So start with your cold start tire pressures at 18 psi & look for a 4psi increase after an hour's riding - LESS than a 4psi increase means your cold start pressure was too HIGH, drop a psi out before your next ride; while MORE than a 4psi increase means your cold start pressure was too LOW, so add a psi before your next ride. Altho the vast majority of Spyders & the tires they can wear will easily fall within that 16-18 psi range, spending a little bit of time now in getting close to the ideal pressure for YOU & YOUR riding, load, surfaces, etc will pay you back in better ride, handling, traction, puncture resistance, tire life et al throughout the tire's life..... "
Last edited by a moderator:
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
2dogs I got your point :thumbup::thumbup: .... and :agree: about the PSI's ..... I only wanted to point to..... WHY THEY WEAR so quickly .... it's all about the construction....I've seen video's a small bridges made of CARDBOARD that allowed a car to drive over it ..... also similar bridges made of wood that couldn't ... It's all in the actual construction ...... JMHO .... Mike :thumbup:
Last edited by a moderator:
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
Just to add some clarification ....Peter and I always State COLD Tire pressures, we have already added in the normal Temp change that usually occur from riding ..... Mike :thumbup:
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
If this makes a difference ..... I don't think they or you have instruments that can measure that small of a Temp difference ..... JMHO ... Mike :thumbup:
My basic Kends perform a little differently to your advice, Blueknight. Fronts at 17 PSI cold give me 30+K km. Rear at 22 PSI cold gives me 20+K km. Not arguing with you, just stating my facts with about 70K+ experience, the last 50K km mostly in the hills, with vigour. Present ryde is 2020 F3Ltd.
Little Blue
SpyderLovers Ambassador
Tire Pressure TIPS
....I have been doing the 4 mile check for a long time. I have been doing this for years. .....:thumbup:
....I have been doing the 4 mile check for a long time. I have been doing this for years. .....:thumbup:
BLUEKNIGHT911
Sadly Passed Oct 2024 - RIP
Thank you for commenting :clap: .... Anything I say about Kenda tires is gleaned from what others here have said ( except for their construction ) since 2009, I have always switched to Auto tires ASAP .... Kenda has changed their tire compound formula a few times during that period .... I have read that a few folks ( very few ) have gotten mileages as high ( and more ) than auto tires. .... These folks seem to be in area's where the road surfaces are unique ... in that tires wear LESS quickly than most roads .... Although I know a lot about tires, I have NO answer as to why this is possible ..... over to you Peter ......Mike .. :thumbup:
Last edited:
Similar threads
