Just as title says. Willing to use either 15" or 16" wheels. Infact the dealer is giving me an extra set of 15" wheels.

 

Hopefully someone has put R comps on an 07 MC by now.

 

I ran the 215/40/16. I think you take too much of a hit in gearing to run the taller 225/50/16.

Several people have had success with the 205/50/15. I think the 225/50/15 will be too pinched on the 15x5.5 wheel.

Of course this was info from running my 02

 

To stay in H-stock you have to stick with a 6.5" wide wheel. Everyone is running 215/40/16. It is a very tight fit. The factory 15" wheels are only 5.5" wide, so you would have to go with a smaller tire.