2012 Mercedes-Benz CLS Bolt Pattern & Tire Size
The 2012 Mercedes-Benz CLS OEM tire size, bolt pattern, and wheel specifications are listed below. All data is based on industry-standard OEM reference specifications.
The 2012 Mercedes-Benz CLS has a 5x112 bolt pattern, an OEM tire size of 255/40R18, and a 66.6mm center bore.
Other years of the Mercedes-Benz CLS
2012 Mercedes-Benz CLS Engine & Trim Levels
Detailed tire and wheel breakdown for the 2012 Mercedes-Benz CLS
Tire geometry â 255/40R18
The 255/40R18 fitted to the 2012 Mercedes-Benz CLS has a section width of 255mm and an aspect ratio of 40%, mounted on a 18-inch rim. That gives a sidewall height of 102.0mm (4.02") and an overall outside diameter of 661.2mm (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 2012 Mercedes-Benz CLS while keeping the speedometer accurate, target a 265/34R19 (plus-one). For a softer ride or winter setup, a 245/47R17 (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 2012 Mercedes-Benz CLS 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 ET30 â ET40 window will clear suspension and fender without rubbing on most setups.
Staggered setup notes
The 2012 Mercedes-Benz CLS ships staggered: 255/40R18 up front and 285/35R18 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 2012 Mercedes-Benz CLS 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%.
OEM Wheel & Tire Specs
| Engine & Trim | Tire Size | Rim Size | Offset (ET) | |
|---|---|---|---|---|
| CLS550 | Rear: 285/35R18 | 18x8.5J | ET35 | |
| AMG CLS63 S | Rear: 285/30ZR19 | 19x9.0J | ET37 |
Frequently Asked Questions
What tire size does the 2012 Mercedes-Benz CLS CLS550 use?
The 2012 Mercedes-Benz CLS CLS550 uses 255/40R18 tires as standard equipment.
What tire size does the 2012 Mercedes-Benz CLS AMG CLS63 S use?
The 2012 Mercedes-Benz CLS AMG CLS63 S uses 255/35ZR19 tires as standard equipment.
What is the bolt pattern of the 2012 Mercedes-Benz CLS?
The 2012 Mercedes-Benz CLS has a 5x112 bolt pattern with a center bore of 66.6mm.
What is the wheel offset of the 2012 Mercedes-Benz CLS?
The 2012 Mercedes-Benz CLS has a wheel offset of ET35.
Other Vehicles with 5x112 Bolt Pattern
The following vehicles share the same 5x112 bolt pattern as the 2012 Mercedes-Benz CLS, making wheel interchangeability possible (verify offset and center bore before swapping).