Air pressure question

[Chris142]

Originally Posted By: bvance554
Originally Posted By: Chris142
I can't stand running my tires at full pressure,plus they wear out in the middle but leave tons of tread on the outsides. I run about 40psi in my ford and 24 in my Jeep. Any more and they ride terrible and wander on the hwy.

My Ford still wears them in the middle @ 40 .they are rated @80.


Chris, you don't inflate your tires according to the maximum pressure listed on the sidewall. If you are running a stock size tire, look on your door jamb or owners manual for the recommended pressure. Your Ford at 40 psi is wearing out the middle of the tire because it is way over inflated. I doubt there are any vehicles that recommend 40 psi. Go let some air out of those things.
door jamb on my truck says 80 rear 51 front

 

[Jetronic]

Owners manual has different pressures listed for different conditions...

2.3/2.1 bar for standard conditions (in my size, for my engine)
2.6/2.2 bar for full load
0.3 bar higher for warm tyres
0.2 bar higher for winter tyres
and for driving above 100 mph you need to go to the full load pressures.

I run 2.6/2.3 cold