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Old 01-05-2009, 07:41 PM   #1
kevinr1970
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Tire size question

Shot in the dark here...

On my '06 GMC I am running 245/70-17 tires; stock size.
My truck has been lowered 2" front (control arms) and 4" rear (hangers/shackles).
I have found what I think is a pretty good deal on a set of suposedly new 20" take-offs. The '07 or '08 rims that look like the mid-80's Iroc rims.
These rims have the stock 275/55-20 tires.

By my calculations these tires are more than an inch wider (9.6 vs. 10.8) and 1-1/2" taller (30.5 vs. 31.9) than my tires now.

Has anyone run a tire size this large on a truck lowered like mine???
It looks like I have plenty of clearance but I am not sure.
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1991 GMC CrewCab Dually 2wd, will end up swb, not dually and replace CCswb below
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1982/1989 K5/GMC Jimmy 2wd
1987 GMC 1/2 ton swb 2wd Crew (sold)
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Old 01-07-2009, 02:52 AM   #2
dailydragger03
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Location: Sevierville/Cookeville TN
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Re: Tire size question

I had 2" 4" drop on my truck for a while. As long as you don't go any lower it should be fine. They will definately get into the fenders if you go any lower. My truck is bagged now on 245/40/20s and its extremely close width wise. The back spacing of the wheel has alot to do with it too.
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