I really want to put some 20's on my mazda but i was wondering is that going to scrub really bad or what? If it is what would be the best size? thans so much for help!
I'd recommend against getting 20's. No 20" tire in the market has the sufficient load rating for the Mazda 6 that's why 20" wheels are not recommended for the 6. You need a tire with a rating of at least 91 @ 34 psi (cold). By getting 20's you are jeopardizing your safety, the safety of your passengers, and your fellow motorists.