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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

4" backspacing for 17x8

  • Thread starter Thread starter 68xstang
  • Start date Start date Feb 14, 2011
6

68xstang

Member
Sep 29, 2010
52
0
6
Feb 14, 2011
#1
  • Feb 14, 2011
  • #1
Hi,

Is 4" backspacing for 17x8 on a 68 coupe a bad option?
I got a set of AR TT2 17x8 wheels, with 4" backspacing. I would like to know
whether they will fit before ordering tires, or will I run into clearance problems? Does anyone have the experience to share?
 
J

j69302

Active Member
Jan 31, 2006
325
1
29
Feb 14, 2011
#2
  • Feb 14, 2011
  • #2
4.5 would be ideal. There are no 17x8 with 4 inch backspacing on the wheel and tire fitment chart.

http://www.dodgestang.com/Tire Fitment Guide 67-8.pdf

What size tires do you plan to run? stock height suspension? lowered?

If you dont go too wide I think they will be ok. However they will rub on the fender lip before they rub on the inside.
 
6

68xstang

Member
Sep 29, 2010
52
0
6
Feb 14, 2011
#3
  • Feb 14, 2011
  • #3
Of course. Stupid me not to inform all data.
I will probably go for 245(or255)/45 in the back and 235/45 in front.

The rear suspension is stock, with brand new leaf springs.
The front suspension is lowered 1" (lowering springs).
Drum brakes.

They will not rub on the inside, but I am a bit concerned about the fender lip.
 
6

65coupe408w

Member
Mar 26, 2010
192
0
16
Feb 14, 2011
#4
  • Feb 14, 2011
  • #4
Im running a 17x8 TT 2 with 4in bs on my 65 coupe and it fits perfect...not sure on a 68. Running 245/45/17 drag radials.
 
J

j69302

Active Member
Jan 31, 2006
325
1
29
Feb 14, 2011
#5
  • Feb 14, 2011
  • #5
68xstang said:
Of course. Stupid me not to inform all data.
I will probably go for 245(or255)/45 in the back and 235/45 in front.

The rear suspension is stock, with brand new leaf springs.
The front suspension is lowered 1" (lowering springs).
Drum brakes.

They will not rub on the inside, but I am a bit concerned about the fender lip.
Click to expand...

I think the back ones might rub on the fender lip. The front should be ok.

I have a 69 and not sure if I have 4 or 4.5 backspacing, but I have 245/60/15's on the rear and they will rub if I have passengers in the back and hit bumps.
 
6

66fstbk88

New Member
Jun 17, 2008
25
0
0
Feb 18, 2011
#6
  • Feb 18, 2011
  • #6
you should be fine. if not just roll the lip
 
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