MSG W
Well-Known Member
As I said old school . Take a piece of chalk and run a line across the trie tread (all 4). Drive about 50 ft. ( on concrete or asphalt) See if the line is worn off even. If the line is in the middle and not on the edge, tire psi is too low. If the middle but on no edges psi is to high. In my F150 the rear trie psi was always lower for good tire wear. When I haul or two I increase the psi. The lower when I am done. I plan on doing my at work was I live in the countryWhat is a "chalk test"?
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