295/30R21
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 295/30R21 tire size features an overall diameter of 27.97 inches, a section width of 11.6 inches (295mm), and rotates 721 times per mile. It is a standard factory tire fitment on 11+ vehicle models including BMW 750i xDrive, BMW Alpina B7 xDrive.
Physical Dimensions & Specs
Overall Diameter
27.97"
710.4 mmSection Width
295 mm
11.61" wideSidewall Height
3.48"
88.4 mm (30% aspect)Revolutions / Mile
721
Circumference: 87.87"Rim Diameter
21"
Wheel sizeRecommended Rim Width
7.4" - 10.3"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 295/30R21 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)295/30R21
Overall Height:28.0"
Sidewall:3.5"
Revs/Mile:721
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+5.7%At 60 mph reading, actual speed is 63.4 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 21.1 mph | +1.1 mph |
| 30 mph | 31.7 mph | +1.7 mph |
| 45 mph | 47.6 mph | +2.6 mph |
| 60 mph | 63.4 mph | +3.4 mph |
| 75 mph | 79.3 mph | +4.3 mph |
| 90 mph | 95.2 mph | +5.2 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:+0.80" ground clearance
Vehicles That Fit 295/30R21 (11+ Models)
Factory standard and optional vehicle fitments utilizing 295/30R21 tires: