P275/55R18
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P275/55R18 tire size features an overall diameter of 29.91 inches, a section width of 10.8 inches (275mm), and rotates 674 times per mile. It is a standard factory tire fitment on 1+ vehicle models including Lincoln Blackwood.
Physical Dimensions & Specs
Overall Diameter
29.91"
759.7 mmSection Width
275 mm
10.83" wideSidewall Height
5.95"
151.1 mm (55% aspect)Revolutions / Mile
674
Circumference: 93.96"Rim Diameter
18"
Wheel sizeRecommended Rim Width
6.9" - 9.6"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P275/55R18 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)275/55R18
Overall Height:29.9"
Sidewall:6.0"
Revs/Mile:674
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-1.1%At 60 mph reading, actual speed is 59.3 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 19.8 mph | -0.2 mph |
| 30 mph | 29.7 mph | -0.3 mph |
| 45 mph | 44.5 mph | -0.5 mph |
| 60 mph | 59.3 mph | -0.7 mph |
| 75 mph | 74.2 mph | -0.8 mph |
| 90 mph | 89.0 mph | -1.0 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:-0.17" lower ground clearance
Vehicles That Fit P275/55R18 (1+ Models)
Factory standard and optional vehicle fitments utilizing P275/55R18 tires: