Tire Ruler215/55R17 dimensions
| Overall diameter (height) | 26.31″ · 668 mm |
| Section width | 8.46″ · 215 mm |
| Sidewall height | 4.66″ · 118 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 6–7.5″ |
| Circumference | 82.7″ |
| Revolutions per mile | 767 |
| In inches (flotation style) | 26.3 × 8.5R17 |
How it’s calculated: the sidewall is 55% of the 215 mm width = 118.3 mm (4.66″). Add two sidewalls to the 17″ wheel: 17 + 2 × 4.66 = 26.31″.
Bigger tires than 215/55R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 225/55R17 | 26.7″ | +0.43″ (+1.6%) | 61.0 mph |
| 215/60R17 | 27.2″ | +0.85″ (+3.2%) | 61.9 mph |
| 235/55R17 | 27.2″ | +0.87″ (+3.3%) | 62.0 mph |
| 225/60R17 | 27.6″ | +1.32″ (+5.0%) | 63.0 mph |
| 235/60R17 | 28.1″ | +1.79″ (+6.8%) | 64.1 mph |
“60 mph reads” is your real speed when a speedometer set up for 215/55R17 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:
- 205/70R15: 26.3″ tall on a 15″ wheel (−0.0%)
- 225/60R16: 26.6″ tall on a 16″ wheel (+1.2%)
- 215/60R16: 26.2″ tall on a 16″ wheel (−0.6%)
- 245/45R18: 26.7″ tall on an 18″ wheel (+1.4%)
- 225/45R18: 26.0″ tall on an 18″ wheel (−1.3%)
- 235/45R18: 26.3″ tall on an 18″ wheel (+0.1%)
Frequently asked questions
Is 215/55R17 a 26 inch tire?
Not quite. 215/55R17 is 26.31 inches tall, between a 26 and a 27 inch tire.
What size is 215/55R17 in inches?
215/55R17 is 26.3 inches tall (overall diameter), 8.5 inches wide, with a 4.7 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 215/55R17?
No common size on a 17" wheel is within 1.5% of 215/55R17's diameter. Use the calculator above to compare any size.
What rim width fits 215/55R17?
As a rule of thumb, about 6–7.5 inches. The tire maker's spec sheet lists the approved range for each model.
How many revolutions per mile does 215/55R17 make?
About 767 revolutions per mile in theory (circumference 82.7 in). Real tires turn slightly more because they flatten under load.