275/50R21
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 275/50R21 tire size features an overall diameter of 31.83 inches, a section width of 10.8 inches (275mm), and rotates 634 times per mile. It is a standard factory tire fitment on 18+ vehicle models including Land Rover Range Rover.
Physical Dimensions & Specs
Overall Diameter
31.83"
808.5 mmSection Width
275 mm
10.83" wideSidewall Height
5.41"
137.4 mm (50% aspect)Revolutions / Mile
634
Circumference: 99.99"Rim Diameter
21"
Wheel sizeRecommended Rim Width
6.9" - 9.6"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 275/50R21 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)275/50R21
Overall Height:31.8"
Sidewall:5.4"
Revs/Mile:634
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-7.1%At 60 mph reading, actual speed is 55.8 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 18.6 mph | -1.4 mph |
| 30 mph | 27.9 mph | -2.1 mph |
| 45 mph | 41.8 mph | -3.2 mph |
| 60 mph | 55.8 mph | -4.2 mph |
| 75 mph | 69.7 mph | -5.3 mph |
| 90 mph | 83.6 mph | -6.4 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:-1.13" lower ground clearance
Vehicles That Fit 275/50R21 (18+ Models)
Factory standard and optional vehicle fitments utilizing 275/50R21 tires: