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post #1 of (permalink) Old 03-15-2008, 04:00 PM Thread Starter
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Largest Size Tire on OEM Wheel

Can you guys tell me the largest size tire (height is more important to me than width) I can put on my 85 CJ steel stamped 15x7 OEM wheel? Thanks,
Duane

1985 CJ with a transplanted 94YJ 4.0L motor, T176 tranny, mainly stock otherwise. ><>
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post #2 of (permalink) Old 03-15-2008, 06:00 PM
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A 9.50 inch wide tire is the widest tire that will wear well on the street to use on that. For off road use, a 10.50 inch wide tire would be the max I would use.

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post #3 of (permalink) Old 03-15-2008, 06:11 PM
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I'm running 33x12.50 bias Swampers on a set of 7.5" wide rims... no issues in the last 5 years. I do agree with Will on the narrower tire wearing better on the street.

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post #4 of (permalink) Old 03-16-2008, 02:42 PM Thread Starter
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Thanks guys. I have the tire for my off roading, I am looking for the optimal type and size for daily computing/driver to be more specific. OEM tire was 205/75-15 on the 15x7 wheel. So Will, what does the 9.5 inch width convert over in mm?

1985 CJ with a transplanted 94YJ 4.0L motor, T176 tranny, mainly stock otherwise. ><>
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post #5 of (permalink) Old 03-16-2008, 03:27 PM
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tire and rim size

hi my son and son in law both work for firestone and they send me info and books from firestone on tire sizes for rims... on the scrambler i got 8in rims and used their revo 32x10.50 but on a 7 in rim the book shows max p265 to 275 x 75 x 15 rule is only go about one inch wider on inside and outside of the rims size so if you have a 7 in rim should not go much wider than 9 in of tire which is measured sidewall to sidewall not tread how this helps some....
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post #6 of (permalink) Old 03-16-2008, 03:47 PM
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Quote:
Originally Posted by DuaneD View Post
Thanks guys. I have the tire for my off roading, I am looking for the optimal type and size for daily computing/driver to be more specific. OEM tire was 205/75-15 on the 15x7 wheel. So Will, what does the 9.5 inch width convert over in mm?
It just depends how tall you're looking for. For example, BFG all terrains come in 30x9.50 and 33x9.50 sizes. For metric sizes, 245mm would be about the widest.

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post #7 of (permalink) Old 03-16-2008, 07:20 PM
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Quote:
Originally Posted by DuaneD View Post
I can put on my 85 CJ steel stamped 15x7 OEM wheel? Thanks,
Duane
Didn't know the later CJ's came with 15X7 rims?? My stock 79 came from the factory with 15X8 steel rims.
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post #8 of (permalink) Old 03-17-2008, 05:35 AM
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The 8" wagon spoke wheels were an option that also included larger tires. The 7" wheels were standard, at least in '78.

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post #9 of (permalink) Old 03-17-2008, 06:52 AM
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Good to know, thanks
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