I've been using 29 psi for my stock 15 inch tires since I've had the car but I just realized today that 29 psi is the recommended cold tire pressure and I put air in my tires at a gas station so the tires are already warm at that point. So today I put it up to 31 psi since the tires were warm and the car handles so much better. My tires used to squeal all the time if i took a corner a little hard but now they don't make a sound unless I push them really hard. My question is what is the best warm tire pressure for my tires?

 

i acutally go up to 34 on my factory 99 GLE wheels, and i like the ride

 

Same here - I have 15X6.5 rims and hated the way the car handled with 29 PSI in the front. Now I run 32-33 PSI and love the ride and handling. way less tire squeal. Now if I can only get the rear wheels to co-operate....

 

I run 35/33 front/rear cold pressure.

 

I run 40/38.

 

just get free air

 

I put 34 for all of my tires.

 

32 for all 4, maintained every weekend....