trying to lower my truck 4/6 need help on sizing rear tire on rims.

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Thatobs89

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I have an 1989 c1500 2wd I'm going to lower soon. My front rims are 15x7 235/60/15 (I know they'll fit) and the rear are 15x10 275/75r15 I just wanna make sure the rears will fit before I lower it and not have the correct tire for it or should I go with a 265/70r15 (I don't want any rubbing either)
 

someotherguy

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If your 15x10 rear wheels have any less than 6", maybe 5.5" of backspacing, you're gonna have problems dropped 4/6

Richard
 

Thatobs89

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If your 15x10 rear wheels have any less than 6", maybe 5.5" of backspacing, you're gonna have problems dropped 4/6

Richard
Ok thanks. Now I just wanna make sure before I buy another rim I’m looking at a 17x8 with a 4.5 back space will that be good and I think +14 offset? and my fronts at 15x7 with I think 3.37 back space will that work?
 

Thatobs89

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I’m going for stocks rn with a 235/70r15 then I’ll go from there. But later on I want to go with 20x9 squared
 

95burban

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A 235 70 isn’t be best choice for a 4/6 drop
 

Javlin42

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I've got a 265/70/17 (measures almost 32 tall) on the rear of my truck with a 4/7 drop. Wheel is a 17x9.5 with a 5.5 bs and I ever so slightly scrape the tire shine off the tire on big bumps. But I have more than an inch on the inside before I have clearance issues there

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