Quote:
Originally Posted by RH77
If you have a good, quality tire, I have to agree with Treb -- beyond max psi can be a worthy mod without negative effects. I have about 30K miles on a set of Michelin MXV4+ tires that have consistently run 50 psi+ over the entire life of the tires. I can go take a picture of them to show absolutely normal wear if requested
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I believe you, but I also know the MXV4 has a sidewall rating of 44 psi but strangely some of the cars it goes on it says to put 51 in it... Matter of fact ALL 55 16's and 17's are rated for 51 psi.
I am talking Max.Psi. sidewall, not the mfg'ers / Owner's manual / door sticker garbage, but the max.psi. rating that is printed on the sidewall of teh tire that is on your car right now lols.
So likely it's on the correct car for the tire OR a small pressure increase isn't going to make it wear full out center and nothing on the outside, but the higher the difference the worse it gets if your tire were a 35 or 40 psi tire that has no further adjustments then most likely 50 psi would not be good.
More than a few high dollar tires (think $100+ each) are easily rated 40-50 psi, that is standard for most GTAS / GT / HP tires, they are good solid tires.
What I would do if I had your tires I do not know, you're probably safe, and I believe what you tell me. Just for myself I will neither compromise safety nor $400 tires over a few miles per gallon, I want 100% rubber-to-pavement contact at all times even if I never need or use it. Oh, and those Michelins are more like $600, nice tires.
In that sense, underinflation would be most anything below Max.psi sidewall, and that is just as bad. Now maybe they don't wear uneven, maybe I am wrong, but always mps for me then is no question.
I guess it's like they say, take what you can use, leave the rest be, this is only my worthless opinion
