285/35R18
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 285/35R18 tire size features an overall diameter of 25.85 inches, a section width of 11.2 inches (285mm), and rotates 780 times per mile. It is a standard factory tire fitment on 62+ vehicle models including Mercedes-Benz SL500, Mercedes-Benz SL55.
Physical Dimensions & Specs
Overall Diameter
25.85"
656.6 mmSection Width
285 mm
11.22" wideSidewall Height
3.93"
99.8 mm (35% aspect)Revolutions / Mile
780
Circumference: 81.22"Rim Diameter
18"
Wheel sizeRecommended Rim Width
7.1" - 10"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 285/35R18 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)285/35R18
Overall Height:25.9"
Sidewall:3.9"
Revs/Mile:780
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+14.4%At 60 mph reading, actual speed is 68.6 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 22.9 mph | +2.9 mph |
| 30 mph | 34.3 mph | +4.3 mph |
| 45 mph | 51.5 mph | +6.5 mph |
| 60 mph | 68.6 mph | +8.6 mph |
| 75 mph | 85.8 mph | +10.8 mph |
| 90 mph | 103.0 mph | +13.0 mph |
Fender & Suspension Clearance
Fitment Status: MODERATE RISK
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Inner Strut Space:7.7mm LESS clearance
Outer Fender Push:Extends 17.7mm further out
Ride Height Delta:+1.86" ground clearance
Vehicles That Fit 285/35R18 (62+ Models)
Factory standard and optional vehicle fitments utilizing 285/35R18 tires: