CTS-V tires/wheels
http://www.cadillac.com/cadillacjsp/...6%20Suspension
Tires
Front: P255/40ZR19 Michelin Pilot Sport 2
Rear: P285/35ZR19 Michelin Pilot Sport 2
Wheels
Aluminum alloy, 5-lug, painted (polished optional)
Front: 19 x 9-in.
Rear: 19 x 9.5-in.