Different size rear wheels what does this do..
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Senior User
Joined: Jan 2000
Posts: 354
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From: Irving Texas
Different size rear wheels what does this do..
87 f-150 2 wheel drive.
rear end : 3.55
changed from 235/75/15 to 31.5/10.5/15
Question 1: Has my rear gear ratio gone down from 3.55 to ?
Question 2: Does this causes more stress on the rear end/Transmission/Engine ?
Thanks in advance.
rear end : 3.55
changed from 235/75/15 to 31.5/10.5/15
Question 1: Has my rear gear ratio gone down from 3.55 to ?
Question 2: Does this causes more stress on the rear end/Transmission/Engine ?
Thanks in advance.
Freshman User
Joined: Jul 2000
Posts: 26
Likes: 0
Different size rear wheels what does this do..
Your 31.5" tires would cause an effective gear ratio of approximately 3.30. Since many trucks come with 3.08 rear ends, I would say there would be minimal additional driveline stress. The rule of thumb is a .10 reduction in effective gear ratio for each 1 inch increase in tire height.
