speedo recalibration
#1
#6
You would need to know the old and new tire specs, either diameter or revs/mile. You can get those from the tire manufacturer's website. Then find out what speedometer gear you have now and do the ratio calculation to see what you need.
BTW, "31" tires are usually 30.4~30.7" tall, not 31" as logic would imply.
BTW, "31" tires are usually 30.4~30.7" tall, not 31" as logic would imply.
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