[Captainfab]

With 15" wheels, you will have to stay with 12" rotors. If you convert the rear to discs, that will add 3/16"-1/4" to each side to the overall axle width.

Originally Posted by slick copper

Thanks Slow Build! Very helpful to know. So for what I'm talking about wanting to do the CPP modular spindles will be my best option. They will still push out my track width 3/4" on each side. But it's only that little bit and wayy less than other spindles. I think I can live with that, and looks like I can keep my wheels!

Couple more questions for you guys.
1. To run my 15" wheels will I need to run the 12" rotors or can I go with the 13"?
2. If I wanted to go 4 wheel discs (add discs in the rear) Would that affect wheel spacing and how much?
Thanks guys, sorry to be a bother. I'm sure all this has been covered before at some point. Just wanna get my facts straight for when I do all this.