2017 Mercedes-Benz SL SL550
The 2017 Mercedes-Benz SL SL550 tire size and wheel specifications below reflect standard OEM reference fitment data for this trim level.
Detailed tire and wheel breakdown for the 2017 Mercedes-Benz SL
Tire geometry â 255/35R19
The 255/35R19 fitted to the 2017 Mercedes-Benz SL has a section width of 255mm and an aspect ratio of 35%, mounted on a 19-inch rim. That gives a sidewall height of 89.3mm (3.51") and an overall outside diameter of 661.1mm (26.03"). At highway speed this tire completes roughly 481 revolutions per kilometre, which is what your speedometer and odometer are calibrated against.
Plus-sizing window
If you want to upsize wheels on the 2017 Mercedes-Benz SL while keeping the speedometer accurate, target a 265/29R20 (plus-one). For a softer ride or winter setup, a 245/42R18 (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 2017 Mercedes-Benz SL uses a 5x112 bolt pattern with a 66.6mm hub bore. Safe rim width range for the OEM tire is 8.0J â 9.0J, and offsets in the ET31 â ET41 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2017 Mercedes-Benz SL ships staggered: 255/35R19 up front and 285/30R19 on the rear. That is a 285mm vs 255mm 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 2017 Mercedes-Benz SL 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) |
|---|---|---|---|
| SL550 | 255/35R19 Rear: 285/30R19 | 19" x 8.5 | ET36 |
Frequently Asked Questions
What tire size does the 2017 Mercedes-Benz SL SL550 use?
The 2017 Mercedes-Benz SL SL550 uses 255/35R19 tires as standard equipment.
What is the bolt pattern of the 2017 Mercedes-Benz SL SL550?
The 2017 Mercedes-Benz SL SL550 has a 5x112 bolt pattern with a center bore of 66.6mm.
What is the wheel offset of the 2017 Mercedes-Benz SL SL550?
The 2017 Mercedes-Benz SL SL550 has a wheel offset of ETET36.