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70 Javelin Wheels back space

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Dshunn View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Dshunn Quote  Post ReplyReply Direct Link To This Post Topic: 70 Javelin Wheels back space
    Posted: Sep/13/2013 at 9:03am
Sorry this has probably been covered but I can't find my exact answer.
I want to run 235x60x15 tires on 15x7 wheels all four corners. Will 4.25 back spacing be fine?
Any problems with this wheel and tire combination on a non lowered stock suspension?
Thanks
Dave
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JEZZ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JEZZ Quote  Post ReplyReply Direct Link To This Post Posted: Sep/14/2013 at 10:56pm
For a 235 on a 7" wheel, you will be more than safe. That said it is more back space than needed. 3-1/4" would put the tire farther out but still tuck in nicely.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote uncljohn Quote  Post ReplyReply Direct Link To This Post Posted: Sep/15/2013 at 8:10am
I do not know what the actual OEM back space is, but the wheels used of 1970 and up all had the same back space across the product line and I am pretty sure were standard with Ford and Chrysler products (along with others) during that time frame as far as interchangeability was concerned if that helps any.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote amx39068 Quote  Post ReplyReply Direct Link To This Post Posted: Sep/15/2013 at 9:44am
4.25 backspace 15X7 wheels with 235/60 should be fine.  Larger 245/60 may rub in the rear with stock springs and bushings when going around a corner
Dan Curtis, AZ AMC Collector Quality Restorations & Parts - amcmusclecars.com
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FuzzFace2 Quote  Post ReplyReply Direct Link To This Post Posted: Sep/15/2013 at 11:58am
The only thing I would worry with a tire that tall if it will hit the front & back openings of the wheel openings.
I say this becasue my 70 Javelin had 245/60/14 that is 25.6 dia. and someone trimed the front fenders to clear. They where on 6" 0 off set and stock wheel spacers to clear the disc calipers up front.
 
The 235/60/15 tire you want to run is 26.1 dia. so you are pushing the size for the rear wheel opening at the rocker. I know my 28" slicks would not fit with out trimming the opening.
 
For me I am going to stick to a 25 dia tire (235/60/14) to start with and go from there.
Or a 225/45/17 or 235/45/17 tire but would need to get wheels too so????????
Dave ----
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