Mercedes-Benz GLC63 AMG S tire size
The most common factory tire size for the Mercedes-Benz GLC63 AMG S is 265/40R21 front, 295/35R21 rear, on 12 of the 12 year and trim fits listed. The table lists every year from 2018 to 2026 and the size each trim was built with. Pick your year and trim to see the tires that fit.
Mercedes-Benz GLC63 AMG S tire sizes by year
| Year | Factory tire size | Trims |
|---|---|---|
| 2026 | 265/40R21 front, 295/35R21 rear | E Performance Coupe, E Performance SUV |
| 265/45R20 front, 295/40R20 rear | E Performance Coupe, E Performance SUV | |
| 2025 | 265/40R21 front, 295/35R21 rear | E Performance Coupe, E Performance SUV |
| 265/45R20 front, 295/40R20 rear | E Performance Coupe, E Performance SUV | |
| 2021 | 265/40R21 front, 295/35R21 rearload index 105, speed rating Y | 4MATIC Coupe, Coupe |
| 265/45R20 front, 295/40R20 rearload index 108, speed rating Y | 4MATIC Coupe, Coupe | |
| 2020 | 265/40R21 front, 295/35R21 rearload index 105, speed rating Y | 4MATIC Coupe, Coupe |
| 265/45R20 front, 295/40R20 rearload index 108, speed rating Y | 4MATIC Coupe, Coupe | |
| 2019 | 265/40R21 front, 295/35R21 rearload index 105, speed rating Y | 4MATIC, Coupe |
| 265/45R20 front, 295/40R20 rearload index 108, speed rating Y | 4MATIC, Coupe | |
| 2018 | 265/40R21 front, 295/35R21 rearload index 105, speed rating Y | 4MATIC, Coupe |
| 265/45R20 front, 295/40R20 rearload index 108, speed rating Y | 4MATIC, Coupe |
Check your own tire
A trim can be sold with more than one wheel size. The size printed on the sidewall of your current tire, or on the placard in the driver's door jamb, is the one your vehicle has.