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Wheel backspace ? #645780 03/20/10 10:37 AM 03/20/10 10:37 AM
Joined: Nov 2007 Posts: 93 New York tt455 OP member
tt455 OP member Joined: Nov 2007 Posts: 93 New York	Can anybody tell me how wide a 15" rim and tire I can go on a 70 Road Runner without playing with suspension? Also what backspace would I need on 15x10 wheels? Thanks.

Re: Wheel backspace ? [Re: tt455] #645781 03/20/10 03:46 PM 03/20/10 03:46 PM
Joined: Nov 2007 Posts: 93 New York tt455 OP member
tt455 OP member Joined: Nov 2007 Posts: 93 New York	Anybody? I did a search but didn't come up with much.

Re: Wheel backspace ? [Re: tt455] #645782 03/20/10 04:18 PM 03/20/10 04:18 PM
Joined: Jan 2003 Posts: 2,757 Gilbertsville, PA 19525 P Pntastar69 master
Pntastar69 master P Joined: Jan 2003 Posts: 2,757 Gilbertsville, PA 19525	Good info here to measure for yourself. https://www.rsracing.com/tech-wheel.html

Re: Wheel backspace ? [Re: Pntastar69] #645783 03/20/10 07:06 PM 03/20/10 07:06 PM
Joined: Jan 2009 Posts: 52 niagara, ontario G gers1968rt member
gers1968rt member G Joined: Jan 2009 Posts: 52 niagara, ontario	If you have 5.5 to 6 inch backspacing you'll be ok. Gerry

Re: Wheel backspace ? [Re: tt455] #645784 03/20/10 07:59 PM 03/20/10 07:59 PM
Joined: Feb 2010 Posts: 33 Eastern North Carolina R riverman member
riverman member R Joined: Feb 2010 Posts: 33 Eastern North Carolina	http://www.wheelsmaster.com/rt_specs.jsp

Re: Wheel backspace ? [Re: tt455] #645785 03/21/10 05:42 AM 03/21/10 05:42 AM
Joined: Nov 2007 Posts: 93 New York tt455 OP member
tt455 OP member Joined: Nov 2007 Posts: 93 New York	Thanks for the info guys.

Re: Wheel backspace ? [Re: tt455] #645786 05/11/10 09:58 PM 05/11/10 09:58 PM
Joined: Nov 2007 Posts: 93 New York tt455 OP member
tt455 OP member Joined: Nov 2007 Posts: 93 New York	Well I tried to put a 15x10 centerline wheel with 6" of backspace with a mounted 275/50/15 drag radial on and it was a no go,right up against the fender lip.Looks like you need at least 7" of backspace.

Re: Wheel backspace ? [Re: tt455] #645787 05/11/10 10:33 PM 05/11/10 10:33 PM
Joined: Dec 2007 Posts: 7,759 So Cal HealthServices Why would you even post that?
HealthServices Why would you even post that? Joined: Dec 2007 Posts: 7,759 So Cal	5.25-5.5 Basically 5.5 and if the tire is really big you may need a .25 spacer on one side but not the other. This is only if you have the factory b body rear end. Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.

Re: Wheel backspace ? [Re: tt455] #645788 05/11/10 10:35 PM 05/11/10 10:35 PM
Joined: Dec 2007 Posts: 7,759 So Cal HealthServices Why would you even post that?
HealthServices Why would you even post that? Joined: Dec 2007 Posts: 7,759 So Cal	With a 275/50 you will have plenty of room. It�s just when you have a tire approaching 305-335 it gets really close. Allen Here's a novel idea, let's not throw a bunch of parts at the car hoping it will fix the problem and instead spend a little time diagnosing it first. Life was a little easier when I was just a wrench.

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