Ok, I read most of the post and didn't see this question asked. I have an SE Caliber with 15" ugly black rims and hubcaps. I have on order 17" Focal Rims. F6 176 Series. 17x7 5x4.5, I will be putting on 215 50 17 tires. Does anyone know if this will affect the CVT and MPG's. I know that the speedo, will show 60 when I will be traveling 58.1 mph. I was thinking that it shouldn't but was told it would, so any help from the more advanced people on here would be appreciated. Thanks.