275/45R18
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
The 275/45R18 tire size features an overall diameter of 27.74 inches, a section width of 10.8 inches (275mm), and rotates 727 times per mile. It is a standard factory tire fitment on 41+ vehicle models including Mercedes-Benz CL600, Mercedes-Benz S600.
Physical Dimensions & Specs
Overall Diameter
27.74"
704.6 mmSection Width
275 mm
10.83" wideSidewall Height
4.87"
123.7 mm (45% aspect)Revolutions / Mile
727
Circumference: 87.16"Rim Diameter
18"
Wheel sizeRecommended Rim Width
6.9" - 9.6"
Optimal rim width rangeWhere to Buy & Install 275/45R18 Tires
Looking for 275/45R18 tires? Skip hauling tires in your car—choose direct delivery to a local certified shop or doorstep delivery:
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Speedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 275/45R18 against any proposed tire size below:
Visual Tire & Wheel Comparison
Speedometer Variance
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 21.3 mph | +1.3 mph |
| 30 mph | 32.0 mph | +2.0 mph |
| 45 mph | 48.0 mph | +3.0 mph |
| 60 mph | 64.0 mph | +4.0 mph |
| 75 mph | 79.9 mph | +4.9 mph |
| 90 mph | 95.9 mph | +5.9 mph |
Fender & Suspension Clearance
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Vehicles That Fit 275/45R18 (41+ Models)
Factory standard and optional vehicle fitments utilizing 275/45R18 tires: