245/30R20
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 245/30R20 tire size features an overall diameter of 25.79 inches, a section width of 9.6 inches (245mm), and rotates 782 times per mile. It is a standard factory tire fitment on 22+ vehicle models including Audi R8.
Physical Dimensions & Specs
Overall Diameter
25.79"
655.1 mmSection Width
245 mm
9.65" wideSidewall Height
2.89"
73.4 mm (30% aspect)Revolutions / Mile
782
Circumference: 81.01"Rim Diameter
20"
Wheel sizeRecommended Rim Width
6.1" - 8.6"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 245/30R20 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)245/30R20
Overall Height:25.8"
Sidewall:2.9"
Revs/Mile:782
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+14.7%At 60 mph reading, actual speed is 68.8 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 22.9 mph | +2.9 mph |
| 30 mph | 34.4 mph | +4.4 mph |
| 45 mph | 51.6 mph | +6.6 mph |
| 60 mph | 68.8 mph | +8.8 mph |
| 75 mph | 86.0 mph | +11.0 mph |
| 90 mph | 103.2 mph | +13.2 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:+1.89" ground clearance
Vehicles That Fit 245/30R20 (22+ Models)
Factory standard and optional vehicle fitments utilizing 245/30R20 tires: