Thread: New Rear Tires causing no speedometer and all dash lights on
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Old 03-12-2020, 04:16 PM   #4 (permalink)
BGTV8
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Your fronts are ~661mm in diameter and new rears are 691mm in dia. This is the root cause of your problem

A 285/30R20 front will be under 3% variance with 305 rear
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