Tire Ruler225/55R17 dimensions
| Overall diameter (height) | 26.74″ · 679 mm |
| Section width | 8.86″ · 225 mm |
| Sidewall height | 4.87″ · 124 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 6–8″ |
| Circumference | 84.0″ |
| Revolutions per mile | 754 |
| In inches (flotation style) | 26.7 × 8.9R17 |
How it’s calculated: the sidewall is 55% of the 225 mm width = 123.8 mm (4.87″). Add two sidewalls to the 17″ wheel: 17 + 2 × 4.87 = 26.74″.
Bigger tires than 225/55R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 215/60R17 | 27.2″ | +0.41″ (+1.5%) | 60.9 mph |
| 235/55R17 | 27.2″ | +0.43″ (+1.6%) | 61.0 mph |
| 225/60R17 | 27.6″ | +0.89″ (+3.3%) | 62.0 mph |
| 235/60R17 | 28.1″ | +1.36″ (+5.1%) | 63.0 mph |
| 225/65R17 | 28.5″ | +1.77″ (+6.6%) | 64.0 mph |
“60 mph reads” is your real speed when a speedometer set up for 225/55R17 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 215/70R15: 26.9″ tall on a 15″ wheel (+0.4%)
- 215/65R16: 27.0″ tall on a 16″ wheel (+1.0%)
- 225/60R16: 26.6″ tall on a 16″ wheel (−0.4%)
- 245/45R18: 26.7″ tall on an 18″ wheel (−0.2%)
- 225/45R19: 27.0″ tall on a 19″ wheel (+0.9%)
Frequently asked questions
Is 225/55R17 a 27 inch tire?
Not quite. 225/55R17 is 26.74 inches tall, between a 26 and a 27 inch tire.
What size is 225/55R17 in inches?
225/55R17 is 26.7 inches tall (overall diameter), 8.9 inches wide, with a 4.9 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 225/55R17?
No common size on a 17" wheel is within 1.5% of 225/55R17's diameter. Use the calculator above to compare any size.
What rim width fits 225/55R17?
As a rule of thumb, about 6–8 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 225/55R17 make?
About 754 revolutions per mile in theory (circumference 84.0 in). Real tires turn slightly more because they flatten under load.