The 2019 Chevrolet Camaro SS is 6th-generation Alpha architecture — a comprehensive redesign that kept the 5x120mm bolt pattern but changed the hub bore from 66.9mm to 65.1mm. That single-millimeter shift matters if you are swapping wheels from a 5th-gen SS or shopping used wheels from that era. The 6th gen runs 20x11 / 20x13 wheels with 305/35R20 / 345/30R20 tires, and the +20 to +30mm offset range on this page is tuned for the revised suspension geometry and wider fender opening of the Gen 6 body. The 2018-2019 Camaro SS received minor suspension calibration updates. The 1LE continued to ship with its 20x9.5 front / 20x10.5 rear factory stagger. For aftermarket builds on base SS cars, the 65.1mm hub bore is the critical verification point — using a wheel designed for the 5th gen without a centering ring will result in vibration at highway speed even if the bolt pattern seats correctly. Lug-centric wheels compensate partially but hub-centric seating is always preferred on high-power applications. With 305/35R20 / 345/30R20 on 20x11 / 20x13 wheels, confirm that your tire's section width does not exceed the wheel's intended width range — running a 335 tire on a 20x11 wheel, for example, is at the outer edge of the acceptable mounting range and may roll the sidewall slightly outward, affecting handling precision. The IRS rear suspension on all Gen 6 SS cars is tolerant of wider rear fitments, but inner liner contact under full droop should be checked with the car unloaded and wheel at full rebound travel.

Available Tire Fitments