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Old 09-16-2014, 03:57 PM   #15
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Quote:
Originally Posted by TravisNuwa81 View Post
Calls for 245 75 16. These are 235 85 16
Both those sizes are rated for 3,042 pounds max weight capacity @80 PSI. The 235/85 is about an inch more diameter (taller) than the 245/75. The 245/75 has 682 revs/mile compared to the 656 revs/mile of the 235/85, so the speedo and odo will be about 3.8% slower with the taller tires. I.e., if the speedo is accurate with the stock tires, then an indicated 70 MPH will be a real speed on Officer Bob's radar of 72.66 MPH with the 235/85s.
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Old 09-16-2014, 08:09 PM   #16
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Quote:
Originally Posted by SmokeyWren View Post
Both those sizes are rated for 3,042 pounds max weight capacity @80 PSI. The 235/85 is about an inch more diameter (taller) than the 245/75. The 245/75 has 682 revs/mile compared to the 656 revs/mile of the 235/85, so the speedo and odo will be about 3.8% slower with the taller tires. I.e., if the speedo is accurate with the stock tires, then an indicated 70 MPH will be a real speed on Officer Bob's radar of 72.66 MPH with the 235/85s.
I originally had 285 75 16. Never had a spot on speedo. Lol
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