255/30R19
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 255/30R19 tire size features an overall diameter of 25.02 inches, a section width of 10.0 inches (255mm), and rotates 806 times per mile. It is a standard factory tire fitment on 2+ vehicle models including BMW Z4.
Physical Dimensions & Specs
Overall Diameter
25.02"
635.5 mmSection Width
255 mm
10.04" wideSidewall Height
3.01"
76.5 mm (30% aspect)Revolutions / Mile
806
Circumference: 78.61"Rim Diameter
19"
Wheel sizeRecommended Rim Width
6.4" - 8.9"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 255/30R19 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)255/30R19
Overall Height:25.0"
Sidewall:3.0"
Revs/Mile:806
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+18.2%At 60 mph reading, actual speed is 70.9 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 23.6 mph | +3.6 mph |
| 30 mph | 35.5 mph | +5.5 mph |
| 45 mph | 53.2 mph | +8.2 mph |
| 60 mph | 70.9 mph | +10.9 mph |
| 75 mph | 88.6 mph | +13.6 mph |
| 90 mph | 106.4 mph | +16.4 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:+2.28" ground clearance
Vehicles That Fit 255/30R19 (2+ Models)
Factory standard and optional vehicle fitments utilizing 255/30R19 tires: