Correct answer
More even wear, without guaranteeing it by itself.
It helps achieve more even wear, among other effects, but does not guarantee it or by itself prove the pressure is correct. Low pressure can increase edge wear and excessive pressure centre wear; alignment and other problems also cause uneven wear. Use a pressure gauge, check cold as the manufacturer specifies, and consider condition and load; do not infer pressure solely from wear.
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The edges necessarily wearing faster than the centre.
Elimination of every vehicle vibration in all cases.
More even wear, without guaranteeing it by itself.
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