P245/55R18
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P245/55R18 tire size features an overall diameter of 28.61 inches, a section width of 9.6 inches (245mm), and rotates 705 times per mile. It is a standard factory tire fitment on 34+ vehicle models including Chevrolet Camaro.
Physical Dimensions & Specs
Overall Diameter
28.61"
726.7 mmSection Width
245 mm
9.65" wideSidewall Height
5.31"
134.9 mm (55% aspect)Revolutions / Mile
705
Circumference: 89.88"Rim Diameter
18"
Wheel sizeRecommended Rim Width
6.1" - 8.6"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P245/55R18 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)245/55R18
Overall Height:28.6"
Sidewall:5.3"
Revs/Mile:705
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+3.4%At 60 mph reading, actual speed is 62.0 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 20.7 mph | +0.7 mph |
| 30 mph | 31.0 mph | +1.0 mph |
| 45 mph | 46.5 mph | +1.5 mph |
| 60 mph | 62.0 mph | +2.0 mph |
| 75 mph | 77.5 mph | +2.5 mph |
| 90 mph | 93.0 mph | +3.0 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:+0.48" ground clearance
Vehicles That Fit P245/55R18 (34+ Models)
Factory standard and optional vehicle fitments utilizing P245/55R18 tires: