P255/60R18
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P255/60R18 tire size features an overall diameter of 30.05 inches, a section width of 10.0 inches (255mm), and rotates 671 times per mile. It is a standard factory tire fitment on 27+ vehicle models including Mazda CX-9.
Physical Dimensions & Specs
Overall Diameter
30.05"
763.3 mmSection Width
255 mm
10.04" wideSidewall Height
6.02"
152.9 mm (60% aspect)Revolutions / Mile
671
Circumference: 94.4"Rim Diameter
18"
Wheel sizeRecommended Rim Width
6.4" - 8.9"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P255/60R18 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)255/60R18
Overall Height:30.0"
Sidewall:6.0"
Revs/Mile:671
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-1.6%At 60 mph reading, actual speed is 59.1 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 19.7 mph | -0.3 mph |
| 30 mph | 29.5 mph | -0.5 mph |
| 45 mph | 44.3 mph | -0.7 mph |
| 60 mph | 59.1 mph | -0.9 mph |
| 75 mph | 73.8 mph | -1.2 mph |
| 90 mph | 88.6 mph | -1.4 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:-0.24" lower ground clearance
Vehicles That Fit P255/60R18 (27+ Models)
Factory standard and optional vehicle fitments utilizing P255/60R18 tires: