180/65R39
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
Factory Spec Overview
The 180/65R39 tire size features an overall diameter of 48.21 inches, a section width of 7.1 inches (180mm), and rotates 418 times per mile. It is a standard factory tire fitment on 12+ vehicle models including Saab 900.
Physical Dimensions & Specs
Overall Diameter
48.21"
1224.5 mmSection Width
180 mm
7.09" wideSidewall Height
4.61"
117.1 mm (65% aspect)Revolutions / Mile
418
Circumference: 151.46"Rim Diameter
39"
Wheel sizeRecommended Rim Width
4.5" - 6.3"
Optimal rim width rangeSpeedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 180/65R39 against any proposed tire size below:
Popular Comparisons:
Tire 1 (Stock / Base)180/65R39
Overall Height:48.2"
Sidewall:4.6"
Revs/Mile:418
Tire 2 (New / Compare)245/60R18
Overall Height:29.6"
Sidewall:5.8"
Revs/Mile:682
Visual Tire & Wheel Comparison
Speedometer Variance
-38.7%At 60 mph reading, actual speed is 36.8 mph
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 12.3 mph | -7.7 mph |
| 30 mph | 18.4 mph | -11.6 mph |
| 45 mph | 27.6 mph | -17.4 mph |
| 60 mph | 36.8 mph | -23.2 mph |
| 75 mph | 46.0 mph | -29.0 mph |
| 90 mph | 55.2 mph | -34.8 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:-9.32" lower ground clearance
Vehicles That Fit 180/65R39 (12+ Models)
Factory standard and optional vehicle fitments utilizing 180/65R39 tires: