Quote:
Originally Posted by Rootripper
Andrew;
What’s the relationship between inflation pressure and tire wear ?
Mike
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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.