P285/50R20
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P285/50R20 tire size features an overall diameter of 31.22 inches, a section width of 11.2 inches (285mm), and rotates 646 times per mile. It is a standard factory tire fitment on 10+ vehicle models including Lexus LX 570.
Physical Dimensions & Specs
Overall Diameter
31.22"
793.0 mmSection Width
285 mm
11.22" wideSidewall Height
5.61"
142.5 mm (50% aspect)Revolutions / Mile
646
Circumference: 98.08"Rim Diameter
20"
Wheel sizeRecommended Rim Width
7.1" - 10"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P285/50R20 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)285/50R20
Overall Height:31.2"
Sidewall:5.6"
Revs/Mile:646
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-5.3%At 60 mph reading, actual speed is 56.8 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 18.9 mph | -1.1 mph |
| 30 mph | 28.4 mph | -1.6 mph |
| 45 mph | 42.6 mph | -2.4 mph |
| 60 mph | 56.8 mph | -3.2 mph |
| 75 mph | 71.0 mph | -4.0 mph |
| 90 mph | 85.3 mph | -4.7 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:-0.82" lower ground clearance
Vehicles That Fit P285/50R20 (10+ Models)
Factory standard and optional vehicle fitments utilizing P285/50R20 tires: