P235/55R20
Passenger / P-MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The P235/55R20 tire size features an overall diameter of 30.18 inches, a section width of 9.3 inches (235mm), and rotates 668 times per mile. It is a standard factory tire fitment on 44+ vehicle models including Cadillac SRX.
Physical Dimensions & Specs
Overall Diameter
30.18"
766.6 mmSection Width
235 mm
9.25" wideSidewall Height
5.09"
129.3 mm (55% aspect)Revolutions / Mile
668
Circumference: 94.8"Rim Diameter
20"
Wheel sizeRecommended Rim Width
5.9" - 8.2"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare P235/55R20 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)235/55R20
Overall Height:30.2"
Sidewall:5.1"
Revs/Mile:668
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-2.0%At 60 mph reading, actual speed is 58.8 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 19.6 mph | -0.4 mph |
| 30 mph | 29.4 mph | -0.6 mph |
| 45 mph | 44.1 mph | -0.9 mph |
| 60 mph | 58.8 mph | -1.2 mph |
| 75 mph | 73.5 mph | -1.5 mph |
| 90 mph | 88.2 mph | -1.8 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:-0.30" lower ground clearance
Vehicles That Fit P235/55R20 (44+ Models)
Factory standard and optional vehicle fitments utilizing P235/55R20 tires: