15x10 with negative offset rims and 235/65/r15 tires

on back of course

 

Main thing to look for, IMO, is that they don't rub on the calipers.

 

Hello Whiteray, You need the check the " Backspace" Just pull off the rim that's on the car now, then put a straight edge across the inside rim of the back and measure down to the lug hole then measure the new wheel. Or do like C-3 says and slap it on the car and make sure it doesn't rub.
I have 15' by 10' rims and 255/60/15's on my car and they fit fine. Hope that helps, PG.

 

Also, the ribs on the inside-backside of the rims is critical.PG is right about measuring the back space, just try the rims on for fit. You can do this prior to mounting the tires. You might check with Summit Racing for rims to fit a C3.

 

You also want to check to see that the tire clears the parking brake cable mount on the side of the trailing arm. It can be moved to the top of the trailing arm for more clearance but requires a little welding.