Shop Buick Century Wheel. 18", code: R1Z-rear. SEDAN, 18", code: R1Z-rear. Wheel - Repair or Replace Code, May, Repair, Rim - OEM Buick Part # 23483724

Rim. Spare wheel. Wheel, alloy.
A wheel / Rim of a vehicle, which may or may not come with a tire mounted to it.

Wheel

Fits ATS

18", code: R1Z-rear. SEDAN, 18", code: R1Z-rear.
Wheel - Repair or Replace
Your wheel may need replacement or repair if you notice a wheel hop in your —in other words, you notice a steering wheel shimmy at highway speeds.