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wheel & tire set up for 1990 gmc
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Posted: 08/03/08
04:31 PM
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I have a 1990 GMC 1/2 ton pickup 2 wheel drive. It has been lowered 4" in the front and 6" in the rear. I currently have a very old set  of 15x7's in the front and 15x8's in the rear. I am going to upgrade and would like to run 17 or 18 inch rims. I would like to get an 8" rim in the front and a 9.5 or 10" rim in the rear. I would like to know backspacing and tire size that will fit. I would like to have some side wall on the tire to go with the way my truck looks. Thanks for any info. 
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JWall202
New User
| Posts: 2
| Joined: 04/09
Posted: 04/14/09
09:10 AM
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My wheels are 20x8.5 in front with 5 3/4" backspacing & rears are 20x10's with 6" backspacing.
I would go with around 5 1/2 backspacing on the front though with a 4/6 drop.
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