Haven't decided on rim size, not the hugest fan of 17-19 in. rims some do look really good but I do realize 15 in. are outdated when comes to modern tires, not looking for crazy widths 215-225 up front in a 25-25.5 in. dia. and 225-255 in. the rear probably with inch or two bigger dia. same if a must. To me 16 in. are a good balance especially up front maybe with 17-18 in. back but if I had to would run 19 in. all around.
