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Old 05-01-2022, 12:47 PM   #7
Fuzzman66
 
Drives: 2017 ZL1-Sold, 2017 2SS Convertible
Join Date: Oct 2020
Location: Powell, Ohio
Posts: 21
I think you guys are correct that the size of the front tires are off. The OEM front tires are 245/40/20 with a diameter of 27.7 inches. The 285/30/20 tires have a diameter of 26.7....an inch smaller. That has to be the issue, and it's going to be a problem as I'm sure it will throw off the speedo, odometer, etc. I think I can fit a 275/35/20 tire on the 20 x 10.5 wheels and the diameter of the tires are 27.6...really close to OEM spec.
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