What backspacing with 15x4" rim?

[98blackstallion]

Would 1 3/4" be good for the front? If that is good what size tire would be a good selection?

 

[Green&GoldGT]

I don't know what kind of wheels you are using, but most people use a 7/16th inch spacer for 15x3.5 weld wheels. You should be fine with a cheap futura or skinny tire that has proper width and same diameter as stock.

 

[98blackstallion]

There summit prostars. I figure I'll get some cheap ones since there only gonna get used like 2-3 times a year if that.

 

[Green&GoldGT]

Summit stars don't need any spacers from what I've read.