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Original Message
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RE: Tires are a pain in the # to get right? |
By RC Moser - 04/18/2001 3:03:29 AM; IP 205.188.200.56 |
Jeff, Before you buy the tires, you need to figure out the tire height of you old ones. You need to know this cause it you get 15" tires the same size or larger they will be taller thus drecreasing you ratio (I think I got that right) which could hurt you ET. So, with that in mind I would stay with the same height tire Not rim size) or alittle bit shorter this will keep you close to the same gear to the payment There are alot of formulas on how to figure as I remember for every I" in height you loose .10 in gear ratio at the rear wheels (maybe some one else will correct that or have a better formula) Most who run 411's or 456's have 15" tires with a taller height , So the ratio at the rear wheel may be lower than what in the rearend. the best way is to jack the car up and mark the drive shaft at the rear end and mark the tire. Make a thin line so it will be actuate. Rotate the tire one revelation and count the drive shaft rotations. This gives you a true ratio to the payment. This is way too long, Sorry.. |
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