265/40R20
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 265/40R20 tire size features an overall diameter of 28.35 inches, a section width of 10.4 inches (265mm), and rotates 711 times per mile. It is a standard factory tire fitment on 28+ vehicle models including Audi A8, Audi A8 Quattro.
Physical Dimensions & Specs
Overall Diameter
28.35"
720.1 mmSection Width
265 mm
10.43" wideSidewall Height
4.17"
105.9 mm (40% aspect)Revolutions / Mile
711
Circumference: 89.05"Rim Diameter
20"
Wheel sizeRecommended Rim Width
6.6" - 9.3"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 265/40R20 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)265/40R20
Overall Height:28.3"
Sidewall:4.2"
Revs/Mile:711
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+4.3%At 60 mph reading, actual speed is 62.6 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 20.9 mph | +0.9 mph |
| 30 mph | 31.3 mph | +1.3 mph |
| 45 mph | 47.0 mph | +2.0 mph |
| 60 mph | 62.6 mph | +2.6 mph |
| 75 mph | 78.3 mph | +3.3 mph |
| 90 mph | 93.9 mph | +3.9 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:+0.61" ground clearance
Vehicles That Fit 265/40R20 (28+ Models)
Factory standard and optional vehicle fitments utilizing 265/40R20 tires: