P265/45R21
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P265/45R21 tire size features an overall diameter of 30.39 inches, a section width of 10.4 inches (265mm), and rotates 664 times per mile. It is a standard factory tire fitment on 8+ vehicle models including Infiniti FX50.
Physical Dimensions & Specs
Overall Diameter
30.39"
771.9 mmSection Width
265 mm
10.43" wideSidewall Height
4.69"
119.1 mm (45% aspect)Revolutions / Mile
664
Circumference: 95.47"Rim Diameter
21"
Wheel sizeRecommended Rim Width
6.6" - 9.3"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P265/45R21 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)265/45R21
Overall Height:30.4"
Sidewall:4.7"
Revs/Mile:664
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-2.7%At 60 mph reading, actual speed is 58.4 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 19.5 mph | -0.5 mph |
| 30 mph | 29.2 mph | -0.8 mph |
| 45 mph | 43.8 mph | -1.2 mph |
| 60 mph | 58.4 mph | -1.6 mph |
| 75 mph | 73.0 mph | -2.0 mph |
| 90 mph | 87.6 mph | -2.4 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:-0.41" lower ground clearance
Vehicles That Fit P265/45R21 (8+ Models)
Factory standard and optional vehicle fitments utilizing P265/45R21 tires: