255/60R20
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 255/60R20 tire size features an overall diameter of 32.05 inches, a section width of 10.0 inches (255mm), and rotates 629 times per mile. It is a standard factory tire fitment on 10+ vehicle models including Jeep Wrangler.
Physical Dimensions & Specs
Overall Diameter
32.05"
814.1 mmSection Width
255 mm
10.04" wideSidewall Height
6.02"
152.9 mm (60% aspect)Revolutions / Mile
629
Circumference: 100.68"Rim Diameter
20"
Wheel sizeRecommended Rim Width
6.4" - 8.9"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 255/60R20 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)255/60R20
Overall Height:32.0"
Sidewall:6.0"
Revs/Mile:629
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-7.7%At 60 mph reading, actual speed is 55.4 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 18.5 mph | -1.5 mph |
| 30 mph | 27.7 mph | -2.3 mph |
| 45 mph | 41.5 mph | -3.5 mph |
| 60 mph | 55.4 mph | -4.6 mph |
| 75 mph | 69.2 mph | -5.8 mph |
| 90 mph | 83.1 mph | -6.9 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:-1.24" lower ground clearance
Vehicles That Fit 255/60R20 (10+ Models)
Factory standard and optional vehicle fitments utilizing 255/60R20 tires: