P255/40R19
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
The P255/40R19 tire size features an overall diameter of 27.03 inches, a section width of 10.0 inches (255mm), and rotates 746 times per mile. It is a standard factory tire fitment on 50+ vehicle models including Cadillac XLR.
Physical Dimensions & Specs
Overall Diameter
27.03"
686.6 mmSection Width
255 mm
10.04" wideSidewall Height
4.02"
102.1 mm (40% aspect)Revolutions / Mile
746
Circumference: 84.92"Rim Diameter
19"
Wheel sizeRecommended Rim Width
6.4" - 8.9"
Optimal rim width rangeWhere to Buy & Install P255/40R19 Tires
Looking for P255/40R19 tires? Skip hauling tires in your car—choose direct delivery to a local certified shop or doorstep delivery:
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Speedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P255/40R19 against any proposed tire size below:
Visual Tire & Wheel Comparison
Speedometer Variance
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 21.9 mph | +1.9 mph |
| 30 mph | 32.8 mph | +2.8 mph |
| 45 mph | 49.2 mph | +4.2 mph |
| 60 mph | 65.6 mph | +5.6 mph |
| 75 mph | 82.1 mph | +7.1 mph |
| 90 mph | 98.5 mph | +8.5 mph |
Fender & Suspension Clearance
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Vehicles That Fit P255/40R19 (50+ Models)
Factory standard and optional vehicle fitments utilizing P255/40R19 tires: