>>The stock tire size for the CQ is 205/60 -16 = which equates to a 24.6" >>205/55 -16 = 24.8" <--- this is what Tire Rack said I should use. >>225/50 -16 = 24.8" >>One CQ owner said he is running 225/45 -16's... this has a 23.97" R.D. What's the difference in size and performance? Dave