175/55R20
Standard MetricFactory Specs, Physical Dimensions & Compatible Vehicle Applications
The 175/55R20 tire size features an overall diameter of 27.58 inches, a section width of 6.9 inches (175mm), and rotates 731 times per mile. It is a standard factory tire fitment on 8+ vehicle models including BMW i3.
Physical Dimensions & Specs
Overall Diameter
27.58"
700.5 mmSection Width
175 mm
6.89" wideSidewall Height
3.79"
96.3 mm (55% aspect)Revolutions / Mile
731
Circumference: 86.64"Rim Diameter
20"
Wheel sizeRecommended Rim Width
4.4" - 6.1"
Optimal rim width rangeWhere to Buy & Install 175/55R20 Tires
Looking for 175/55R20 tires? Skip hauling tires in your car—choose direct delivery to a local certified shop or doorstep delivery:
Tire Rack
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Amazon Automotive
Fast doorstep shipping for DIYers or bringing to your own shop.
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Speedometer & Alternate Size Calculator
Testing an alternate size for your vehicle? Compare 175/55R20 against any proposed tire size below:
Visual Tire & Wheel Comparison
Speedometer Variance
| Indicated | Actual Speed | Diff |
|---|---|---|
| 20 mph | 21.4 mph | +1.4 mph |
| 30 mph | 32.2 mph | +2.2 mph |
| 45 mph | 48.3 mph | +3.3 mph |
| 60 mph | 64.3 mph | +4.3 mph |
| 75 mph | 80.4 mph | +5.4 mph |
| 90 mph | 96.5 mph | +6.5 mph |
Fender & Suspension Clearance
Flush fitment. Extends 17.7mm outwards. Check wheel arch clearance under full suspension compression.
Vehicles That Fit 175/55R20 (8+ Models)
Factory standard and optional vehicle fitments utilizing 175/55R20 tires: