Need some assistance!

Alright, so I've currently got an 07 access cab with 235/75r/15's with 1.5" spacers. I'm looking for my tires to stick out a bit more, and was looking at a set of pro comp steelies. Anybody have an idea how much more I'll be sticking out with these rims on? Eventually I'll get some bigger tires, just strapped for cash so I can only do one thing at a time. It's a 5 lug 4 banger aswell. Any help would be greatly appreciated.

 

Go with 315/55r15s if they exist

 

Anybody else with some useful information?

 

find out the offset of the steelies

 

3.75" backspacing

 

Not sure what you're doing, but , with the specs of the rims center offset, you should be able to estimate how far out they will get, just watch for rubbing when turning. Estimating is a coin toss, when I bought my BBS 18's and little bigger tires 1/2 inch overall diameter increase I estimated no rubbing, well I was off by 3 millimeters, had to shave some plastic cowl out. Good luck.