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Old 03-30-2021, 07:32 PM
Join Date: Sep 2016
Location: USA
Posts: 383
Bdc101 is on a distinguished road
Originally Posted by Rootripper View Post
What’s the relationship between inflation pressure and tire wear ?

If you over-inflate, more of the car's weight will be on the center of the tread (the area supported by the air pressure inside the tire), and you'll wear that out faster.

If you under-inflate, more of the car's weight will be on the edges of the tire (the area supported by the stiffness of the sidewalls), and the edges will wear out faster.

Ideally you will want as close to even pressure on the ground throughout the entire contact patch (the area that the tire contacts the ground). This will get you maximum traction when cornering or accelerating.

Unless the problem is extreme, you usually have to measure the tread depth to compare the edges and the center. If you notice one wearing faster than the other you can add or remove pressure to try to get a bit more life out of the tire.
2003 3.0 5-speed
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Old 03-30-2021, 09:55 PM
Join Date: Jul 2016
Location: Menlo Park, CA
Posts: 1,643
Fifty150hs is on a distinguished road
Originally Posted by Rootripper View Post
My mechanic says correcting the bad angle can be expensive. Entire suspension components need replacement. Was he pulling my leg ?
I had similar problem. Alignment shop couldn't get the rear camber into spec. Idiots were telling me shocks must be bad and sagging. Say whaaaa? Anyway, I suspected bad rear ball joints from researching this forum. Changed them and lo and behold my "bad shocks" weren't "bad" anymore and another, competent alignment shop easily brought the rear camber into spec.
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