220/55R39
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 220/55R39 tire size features an overall diameter of 48.53 inches, a section width of 8.7 inches (220mm), and rotates 416 times per mile. It is a standard factory tire fitment on 11+ vehicle models including Ford Mustang, Mercury Capri.
Physical Dimensions & Specs
Overall Diameter
48.53"
1232.7 mmSection Width
220 mm
8.66" wideSidewall Height
4.76"
120.9 mm (55% aspect)Revolutions / Mile
416
Circumference: 152.45"Rim Diameter
39"
Wheel sizeRecommended Rim Width
5.5" - 7.7"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 220/55R39 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)220/55R39
Overall Height:48.5"
Sidewall:4.8"
Revs/Mile:416
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-39.1%At 60 mph reading, actual speed is 36.6 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 12.2 mph | -7.8 mph |
| 30 mph | 18.3 mph | -11.7 mph |
| 45 mph | 27.4 mph | -17.6 mph |
| 60 mph | 36.6 mph | -23.4 mph |
| 75 mph | 45.7 mph | -29.3 mph |
| 90 mph | 54.8 mph | -35.2 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:-9.48" lower ground clearance
Vehicles That Fit 220/55R39 (11+ Models)
Factory standard and optional vehicle fitments utilizing 220/55R39 tires: