jack the car up on jackstands, mark the inside of the tire, mark the driveshaft, have a friend turn the tire one full roatation slowly and count rotations of the driveshaft
2 and about 3/4 times 2.73
just over 3, 3.08
3 and 1/4 3.27's
just over 3 and 1/3 3.55's
about 3 and 3/4 3.73's
etc etc etc
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