I'm in north east tx looking for someone to take 2 of my 14s and make 15x8 or 9 for my 72 convertible cutlass . Which would fit better 8 or 9" in the rear I'm thinking of painting the rims color match body and run them with the 7" beauty rings i have some 15" unless they won't look right then raw she is no rings. Anybody know who's modifying these steel wheels ?

 

If you keep near zero offset, there are trim rings made for 15x8 Chevy Rally wheels that can work. As for making these, the hoops are hard to get. The SSII/III wheels require special hoops with more of a drop in the center than normal, due to the fact that the center disks are the same for 14" and 15" wheels.

 

Try these guys:
http://www.mrt-wheels.com

I have heard they do good work but I have not taken anything to them yet. I used to get this done by a guy that did it as his main income but he has been getting bad feedback from several sites. I also know a guy in Kansas that does it but his prices have gone way up.

 

Thank you

 

The rear wheel wells are so large even 10" wide wheels fit, so 8 or 9 will fit with no issues as long as the backspacing is correct.

 

These guys do top quality work.
http://www.rallyamerica.com/

 

Thanks for that info! I have been wanting to have some 9 or 10 inch wide SSIII wheels made and these folks are right next door in CA.

 

How do you figure backspace ? I'm running stock rearend 72 vert .

 

My 15x8"s have 5" BS, stock is 4.75.

 

Most of the time, if possible, the best setup is zero offset. This confuses people at times but it is actually simple. If you measure from the mating surface on the backside of the wheel lip, you get your wheel backspace measurement. An 8" wide wheel measured between the beads is about 9" from front lip to back lip. A zero offset 8" wheel would have a backspace of 4.5". Zero offset is where you have the same measurement to the front and back, in this case 4.5". You then measure from your hub mating surface of your brake drum/disc to your nearest inner interference either your frame or inner fender. Then from hub surface to the outer inside fender lip. One of these will measure more so any extra wheel depth should be offset that way if you are going for max wheel width. For a ten inch wide 15, these cars usually take a 5.5" bs to get the max tire to fit. An 8" with 4.5" bs also works very well. I have a 17x11 w/6" bs and a 315 tire on my 72 442 and it fits perfect.

 

Oh yea I bet that is a nice fit up in there... Yea I think I'm sending off 2 14x7 bolt on centers to be made into 15x10 that should have old yeller sitting right ....