235/50R21
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 235/50R21 tire size features an overall diameter of 30.25 inches, a section width of 9.3 inches (235mm), and rotates 667 times per mile. It is a standard factory tire fitment on 31+ vehicle models including Lexus RX 350.
Physical Dimensions & Specs
Overall Diameter
30.25"
768.3 mmSection Width
235 mm
9.25" wideSidewall Height
4.63"
117.6 mm (50% aspect)Revolutions / Mile
667
Circumference: 95.04"Rim Diameter
21"
Wheel sizeRecommended Rim Width
5.9" - 8.2"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 235/50R21 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)235/50R21
Overall Height:30.3"
Sidewall:4.6"
Revs/Mile:667
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-2.2%At 60 mph reading, actual speed is 58.7 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 19.6 mph | -0.4 mph |
| 30 mph | 29.3 mph | -0.7 mph |
| 45 mph | 44.0 mph | -1.0 mph |
| 60 mph | 58.7 mph | -1.3 mph |
| 75 mph | 73.3 mph | -1.7 mph |
| 90 mph | 88.0 mph | -2.0 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:-0.34" lower ground clearance
Vehicles That Fit 235/50R21 (31+ Models)
Factory standard and optional vehicle fitments utilizing 235/50R21 tires: