Wheel sizes

[ryanundertrees]

Easy question for the pros... What wheel dimensions do I need to hit on my 75 FJ40. 15x8 and ?? backspacing??..... What else works?
Thanks

 

[Rice]

3.5 inch back spacing for the front ... the rear is more forgiving. Because so many wheels made today come in 3.75 inch back spacings you can get away with using them and a 1/4 inch spacer.