The 16" Accessory wheel is applicable on Cobalt and G5 w/o Cobalt SS model only. The approved tire for the Cobalt and G5 16" GM Accessory wheel application is P205/55R16 with TPC code 1130MS. P6 Four Seasons Pirelli part # 1464700 or Goodyear Eagle RS-A #31013982 and 205/55 R16 Hankook Optimo H725A for G5.
Powertrain Control Module reprogramming required for plus-sizing to the 16" wheels.
17800578 Will Not Work on 5 Lug Pattern Models.