Help with tire pressure

[IdahoMtnSpyder]

My wife and I have been riding our Spyders (RT 2010 & 2011) for 5-6 years with the front tire pressure at about 18@. She went to fill hers up and correctly stated that the sidewall says a Max pressure of 30psi!!!!???? I looked and it says that on both our Spyders. Mine has new fronts (from BRP) and hers are still OEM. I got about 22000 miles on my first set, but

I don't want to run under-inflated. What's the answer?

30 is the safety limit, not recommended pressure. 15 is BRP recommended pressure.

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[AY4B]

On my first rear tire, It was time to change at 3500 miles. I got a Yokahama S drive and wore it out at around 8 thousand. The center was going bald. I was running 28 pounds. Just got a new Yokohama mounted. Should I drop to 26 or lower?

 

[Peter Aawen]

..... Should I drop to 26 or lower?

Not on the Kendas, they can't handle it!! :shocked: But certainly drop your pressure on any car tire with a load rating that's up to carrying a normal sedan - the Spyders are significantly lighter so any 'strong' tire underneath them will generally only need about 20-22 psi in them to carry the load & let the tire achieve operating temps, the heavier/stronger they are constructed or the lighter the load on them, the lower their necessary pressure to do the job becomes - but they will generally do it safely & without any hassles!! :thumbup:

Car tires under something light like our Spyders need the lower pressures to let their stronger/heavier sidewalls flex suitably to generate that 'necessary for proper operation' heat but you don't want to go so low that you compromise their handling, your safety, or the tire's integrity, so you should probably use something like the 4psi rule or an infra red thermometer to confirm that the tire isn't overheating/increasing in pressure (due to overheating) too much!!

A pressure increase of 4-6psi after an hour's riding from your cold start pressures is ideal & what you should be aiming for - less increase, your cold start pressures are too high & you are compromising the tire's puncture resistance, grip, & wear rates, especially in the centre of the tread; more increase & your cold start pressures are too low so you are compromising the tire's sidewalls, handling, & wear rates, especially on the edges of the tread.

It's not hard really all that hard to do (especially with a TPMS) but by putting in the effort to regularly check your tire pressures/pressure increas & aiming for the right pressure/temperature increase during use, you get significant pay-back in terms of optimising your ride, handling, traction, & tire life - doing so can pay for the extra effort the very first time you avoid an aqua-plane incident in the wet or simply thru the better ride & handling you'll get every day... & you get better grip, ride & handling every day that for the (usually significant) longer life of the tires too!! :thumbup:

Or, if you can't be bothered to look after your tires this way, you can just learn to accept the 'less than ideal' ride, handling, grip, & tire life that you are undoubtedly getting!! (unless by some fluke you managed to set your pressures reasonably close to the ideal )

 

[AY4B]

Not on the Kendas, they can't handle it!! :shocked: But certainly drop your pressure on any car tire with a load rating that's up to carrying a normal sedan - the Spyders are significantly lighter so any 'strong' tire underneath them will generally only need about 20-22 psi in them to carry the load & let the tire achieve operating temps, the heavier/stronger they are constructed or the lighter the load on them, the lower their necessary pressure to do the job becomes - but they will generally do it safely & without any hassles!! :thumbup:

Car tires under something light like our Spyders need the lower pressures to let their stronger/heavier sidewalls flex suitably to generate that 'necessary for proper operation' heat but you don't want to go so low that you compromise their handling, your safety, or the tire's integrity, so you should probably use something like the 4psi rule or an infra red thermometer to confirm that the tire isn't overheating/increasing in pressure (due to overheating) too much!!

A pressure increase of 4-6psi after an hour's riding from your cold start pressures is ideal & what you should be aiming for - less increase, your cold start pressures are too high & you are compromising the tire's puncture resistance, grip, & wear rates, especially in the centre of the tread; more increase & your cold start pressures are too low so you are compromising the tire's sidewalls, handling, & wear rates, especially on the edges of the tread.

It's not hard really all that hard to do (especially with a TPMS) but by putting in the effort to regularly check your tire pressures/pressure increas & aiming for the right pressure/temperature increase during use, you get significant pay-back in terms of optimising your ride, handling, traction, & tire life - doing so can pay for the extra effort the very first time you avoid an aqua-plane incident in the wet or simply thru the better ride & handling you'll get every day... & you get better grip, ride & handling every day that for the (usually significant) longer life of the tires too!! :thumbup:

Or, if you can't be bothered to look after your tires this way, you can just learn to accept the 'less than ideal' ride, handling, grip, & tire life that you are undoubtedly getting!! (unless by some fluke you managed to set your pressures reasonably close to the ideal )

Thanks Peter! I will go with 22 and keep an eye on the temperature that the FOBO is reading. I am still running the stock front tires and keep them at 18 psi. They still have lots of tread.

 

[BLUEKNIGHT911]

WELLLLLLL NOW THAT YOU MENTION IT

On my first rear tire, It was time to change at 3500 miles. I got a Yokahama S drive and wore it out at around 8 thousand. The center was going bald. I was running 28 pounds. Just got a new Yokohama mounted. Should I drop to 26 or lower?

If you only got 8,000 on the " S " drive ........ why did you get another one :banghead::banghead::banghead: .......... Mike :thumbup:

 

[Bam Bam and Pebbles]

If you only got 8,000 on the " S " drive ........ why did you get another one :banghead::banghead::banghead: .......... Mike :thumbup:

True Dat! Hell, I got 10k on my crapenda OEM tire before I changed it out.

 

[Bensonoid]

I run 20 lb. in my s drive. I started out with 26 and noticed the center was wearing at 8000 mi. I expect to get another 6-8 k out of it now.

 

[AY4B]

If you only got 8,000 on the " S " drive ........ why did you get another one :banghead::banghead::banghead: .......... Mike :thumbup:

Cuz It was Bald:yikes: