P265/45R18
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P265/45R18 tire size features an overall diameter of 27.39 inches, a section width of 10.4 inches (265mm), and rotates 736 times per mile. It is a standard factory tire fitment on 13+ vehicle models including Cadillac CTS.
Physical Dimensions & Specs
Overall Diameter
27.39"
695.7 mmSection Width
265 mm
10.43" wideSidewall Height
4.69"
119.1 mm (45% aspect)Revolutions / Mile
736
Circumference: 86.05"Rim Diameter
18"
Wheel sizeRecommended Rim Width
6.6" - 9.3"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P265/45R18 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)265/45R18
Overall Height:27.4"
Sidewall:4.7"
Revs/Mile:736
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
+8.0%At 60 mph reading, actual speed is 64.8 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 21.6 mph | +1.6 mph |
| 30 mph | 32.4 mph | +2.4 mph |
| 45 mph | 48.6 mph | +3.6 mph |
| 60 mph | 64.8 mph | +4.8 mph |
| 75 mph | 81.0 mph | +6.0 mph |
| 90 mph | 97.2 mph | +7.2 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:+1.09" ground clearance
Vehicles That Fit P265/45R18 (13+ Models)
Factory standard and optional vehicle fitments utilizing P265/45R18 tires: