2019 Mercedes-Benz GLC AMG GLC63 S
The 2019 Mercedes-Benz GLC AMG GLC63 S tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2019 Mercedes-Benz GLC
Tire geometry â 265/45R20
The 265/45R20 fitted to the 2019 Mercedes-Benz GLC has a section width of 265mm and an aspect ratio of 45%, mounted on a 20-inch rim. That gives a sidewall height of 119.3mm (4.69") and an overall outside diameter of 746.5mm (29.39"). At highway speed this tire completes roughly 426 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2019 Mercedes-Benz GLC while keeping the speedometer accurate, target a 275/39R21 (plus-one). For a softer ride or winter setup, a 255/52R19 (minus-one) keeps the overall diameter within Âą3% of stock, which is the industry tolerance for ABS and stability control to stay calibrated.
Wheel fitment specs
The 2019 Mercedes-Benz GLC uses a 5x112 bolt pattern with a 66.6mm hub bore. Safe rim width range for the OEM tire is 9.0J â 10.0J, and offsets in the ET25 â ET35 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2019 Mercedes-Benz GLC ships staggered: 265/45R20 up front and 295/40R20 on the rear. That is a 295mm vs 265mm width difference â do not rotate front-to-rear, and replace tires in axle pairs to keep ABS and traction control balanced.
Tire pressure guidance
Manufacturer-recommended cold tire pressure for the 2019 Mercedes-Benz GLC is printed on the driver-side door jamb sticker â always defer to that value, not to the maximum pressure printed on the tire sidewall. Check pressure monthly and before long trips; under-inflation by 20% can reduce tread life by 25%.
Fitment Specifications
| Engine & Trim | Tire Size | Rim Size | Offset (ET) |
|---|---|---|---|
| AMG GLC63 S | 265/45R20 Rear: 295/40R20 | 20" x 9.5 | ET30 |
Frequently Asked Questions
What tire size does the 2019 Mercedes-Benz GLC AMG GLC63 S use?
The 2019 Mercedes-Benz GLC AMG GLC63 S uses 265/45R20 tires as standard equipment.
What is the bolt pattern of the 2019 Mercedes-Benz GLC AMG GLC63 S?
The 2019 Mercedes-Benz GLC AMG GLC63 S has a 5x112 bolt pattern with a center bore of 66.6mm.
What is the wheel offset of the 2019 Mercedes-Benz GLC AMG GLC63 S?
The 2019 Mercedes-Benz GLC AMG GLC63 S has a wheel offset of ETET30.