Tire Ruler215/50R17 dimensions
| Overall diameter (height) | 25.46″ · 647 mm |
| Section width | 8.46″ · 215 mm |
| Sidewall height | 4.23″ · 108 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 6–7.5″ |
| Circumference | 80.0″ |
| Revolutions per mile | 792 |
| In inches (flotation style) | 25.5 × 8.5R17 |
How it’s calculated: the sidewall is 50% of the 215 mm width = 107.5 mm (4.23″). Add two sidewalls to the 17″ wheel: 17 + 2 × 4.23 = 25.46″.
Bigger tires than 215/50R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 225/50R17 | 25.9″ | +0.39″ (+1.5%) | 60.9 mph |
| 215/55R17 | 26.3″ | +0.85″ (+3.3%) | 62.0 mph |
| 225/55R17 | 26.7″ | +1.28″ (+5.0%) | 63.0 mph |
| 215/60R17 | 27.2″ | +1.69″ (+6.6%) | 64.0 mph |
| 235/55R17 | 27.2″ | +1.71″ (+6.7%) | 64.0 mph |
“60 mph reads” is your real speed when a speedometer set up for 215/50R17 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 215/50R17
Within 1.5% of the same height on a 17″ wheel. Usually interchangeable for the speedometer; check width, load index and clearance.
| Size | Height | Width | Difference |
|---|---|---|---|
| 235/45R17 | 25.3″ | 9.3″ | −0.5% |
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
- 205/65R15: 25.5″ tall on a 15″ wheel (+0.1%)
- 205/60R16: 25.7″ tall on a 16″ wheel (+0.9%)
- 245/40R18: 25.7″ tall on an 18″ wheel (+1.0%)
- 225/40R18: 25.1″ tall on an 18″ wheel (−1.5%)
Frequently asked questions
Is 215/50R17 a 25 inch tire?
Not quite. 215/50R17 is 25.46 inches tall, between a 25 and a 26 inch tire.
What size is 215/50R17 in inches?
215/50R17 is 25.5 inches tall (overall diameter), 8.5 inches wide, with a 4.2 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 215/50R17?
Sizes within 1.5% of the same diameter on a 17" wheel: 235/45R17 (25.3"). Check load index and width before swapping.
What rim width fits 215/50R17?
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 215/50R17 make?
About 792 revolutions per mile in theory (circumference 80.0 in). Real tires turn slightly more because they flatten under load.