My rear tires (General Exclaim UHP's w/ ~12k miles) are wearing quite a bit more in the center of each tire than they are on the edges. I checked my tire pressure this morning, and I'm at 31 psi. It's colder this morning (about 40 degrees) than it has been yet this summer/fall.

My question is, would it still be okay to back off my tire pressure a little bit to try to get a more even wear, and if so how much?

I realize I don't want to deflate it to the point that the edges of the tires "catch up" with the wear level of the centers, because then I am essentially running with an under-inflated tire, but I would like to at least get it to even out a bit to extend the tire life.

 

id try what you said about backing off the tire pressure a couple pounds, generally they only wear in the center when overinflated.

 

Ding,Ding,Ding

 

usually runs 35psi

 

Its actually an alignment thing, my 452's got killed that way . Run your tires at normal pressure and get it aligned.

 

Actually, if your tires wear more on one side than the other, then it's an alignment issue.

OP, your rear tires are overinflated for the width of the tire. If you have a wider tire with the same wheel diameter, then you actually need less PSI to support the car (PSI = pressure per square inch). It's not a one-to-one relationship, though.

 

Thanks, that makes sense. I try to keep them around the recommended 35 psi, but I'm gonna drop them for awhile and see what happens.

 

I wouldn't drop them too much -- maybe no more than to 32 PSI.