I want to change the rims on my 90 Iroc but I cant find a style I like in the 16" size.Can I put 15" rims on the car ? [90 Rs Camaro type,there are lots more styles to look at] This is assuming proper backspace etc.Will there be brake rotor/caliper clearance issues? Thanks!

 

16" wheels and especially 16" tires are rapidly becoming scarce these days.

You can certainly put on 15" wheels - they may clear your brakes. But why not shop into 17" wheels - you will have many more tire choices, no problem with brakes, and the ability to help your handling and braking.