15 in wheel backspacing?

[mustangjoed]

just bought my first 86 gn and want to put 15x9 centerlines with 275/60 drag radials on back with 15x7 centerlines 235/60 on front. is anyone running this combo and could you tell what backspacing to use that wont require any modification? thanks

 

[CJ's6]

I would say a 4" bs for the rear and a 3.5" bs for the front.

 

[gpadilla1071]

just bought my first 86 gn and want to put 15x9 centerlines with 275/60 drag radials on back with 15x7 centerlines 235/60 on front. is anyone running this combo and could you tell what backspacing to use that wont require any modification? thanks

I've just installed mines and I had to use spacers for the rear due to the type of rim I bought. It's working well for me right now. I put 225/60/R15 up front and 275/60/R15 on the rear. My rear rim is 15X8 with 4.5 BS. However if you can get a rim with either 3 or 3.5 BS that will work better without the wheel spacers. Just my opinion... Check the pics...

 

[mustangjoed]

thank you

 

[mustangjoed]

thank you by the way with the 4.5 backspacing what size spacer did you have to use on the rear?

 

[gpadilla1071]

thank you by the way with the 4.5 backspacing what size spacer did you have to use on the rear?

To be honest I don't know, but it looks like it was 1/2". But be careful on the spacers. You don't want to go too far or you will not have enough for the lug bolts.

 

[mustangjoed]

thanks again the help is appreciated.