Quick Question About Tyre Pressures

[Redwarf]

Another for 32psi al round. This is what we ran in our 96 Corolla with 13's. 250000 Km's of happy motoring at that pressure.

[chappo12]

32 for my dailly.

 

 

 

what would you run for a hill climb as I'm doing my first and the tyres wont get very hot

[MicMac]

Yeah, I'll just be different, I'd run about thirty or so. All those placards say far too little, cos then when you hit a bump the tyres absorb part of the shock, hence making the ride feel smoother, and also cos they wear more, sending you to the tyre man more often. But careful of putting too much in, as it pushes out the centre of the rolling edge, meaning you get too much wear there. tricky game. experiment experiment is gonna be the key.

[Redwarf]

32 for my dailly.

 

 

 

what would you run for a hill climb as I'm doing my first and the tyres wont get very hot

 

RWD or FWD?

 

36 to 38 for a RWD and go up from there. Have run up to mid-high 40's for a hillclimb

[cinky]

MicMac touched on the whole "what the wrong pressure can do"

if you have too high of a PSI the centre of the tread will expand greater then the outer edges which will cause the tyre s to go bald thru the middle of the tread and too low will cause the opposite to happen you will round off the edges of your tires and will go bald on the outer edges. and the reason why people understeer on higher pressures is because there is less of the tyre on the road to make traction.

Keep in mind when setting tyre pressures that the air inside of the tyre will expand and shrink with heat so a hot day and doing a long trip and then checking the PSI it may be around the 40PSI mark even tho u may usually only run 30 - 32 PSI

[Karllos]

Also make an effort to check your tyre pressures before you drive, or wait therefor giving them a chance to cool down.

 

Ive done it at work before half my car was in the sun (the left side) and then the right side tyres were cooler than the left and there was a difference in pressure about 4psi just without driving on them.

 

An easy rule of thumb is to check them when they're cold as it is the easiest to replicate on different occasions.

 

Karl.

Edited March 24, 2010 by Karllos

[Felix]

In general the higher the pressure (keeping within the manufacturers recommended ratings), the lower the tyre slip angle.

[sam k]

I usally run 34 in the front and 32 in the rear to compensate for the rear being stiffer.

I like nice and hard front's gives nicer turn in and nice light steering.

[Johno]

I put about 32-34 psi on the falcon 205 65 R15. I only check it about every 6 months, sometimes its been as low as 22psi but thats because i was lazy. ;) On the rolla i was told to run about 40psi on my 195 50 R15 tires. Never actually checked them though, bought them brand new with mags and it was off 4 months later for a full restoration.

[13BT_KE20]

i check my pressures about once a month or before i go for a "spirited drive"