Originally Posted by John_01
The downside of this setup is going to be the weight. OEM 17" wheels can be really heavy. So are proper sports tires with suitable stiff sidewalls.
The Conti DW in 255/40R17 is lighter than the RE050 RFT in 225/45R17. The 8.5" wheel is only a pound or two heavier than the 8" wheel.