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Old 06-05-2019, 11:04 AM   #3
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If you have PSM there is a possibility that the different wheel diameter will confuse it and cause interesting things to happen. As a rule, the outside diameter of the wheel should not change, unless you do so for all four wheels. PSM uses rotation sensors in the wheels to determine whether they are slipping.

A 245/40/17 has a smaller outer diameter than a 255/40/17.
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