Tire Ruler215/45R17 dimensions
| Overall diameter (height) | 24.62″ · 625 mm |
| Section width | 8.46″ · 215 mm |
| Sidewall height | 3.81″ · 97 mm |
| Wheel diameter | 17″ |
| Rim width (rule of thumb) | 6–7.5″ |
| Circumference | 77.3″ |
| Revolutions per mile | 819 |
| In inches (flotation style) | 24.6 × 8.5R17 |
How it’s calculated: the sidewall is 45% of the 215 mm width = 96.8 mm (3.81″). Add two sidewalls to the 17″ wheel: 17 + 2 × 3.81 = 24.62″.
Bigger tires than 215/45R17 on 17″ wheels
| Size | Height | Taller by | 60 mph reads |
|---|---|---|---|
| 225/45R17 | 25.0″ | +0.35″ (+1.4%) | 60.9 mph |
| 205/50R17 | 25.1″ | +0.45″ (+1.8%) | 61.1 mph |
| 235/45R17 | 25.3″ | +0.71″ (+2.9%) | 61.7 mph |
| 215/50R17 | 25.5″ | +0.85″ (+3.4%) | 62.1 mph |
| 225/50R17 | 25.9″ | +1.24″ (+5.0%) | 63.0 mph |
“60 mph reads” is your real speed when a speedometer set up for 215/45R17 shows 60. Above about 3% taller, most trucks need a leveling kit or lift, and the speedometer should be recalibrated.
Sizes equivalent to 215/45R17
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 |
|---|---|---|---|
| 225/45R17 | 25.0″ | 8.9″ | +1.4% |
Same height on a different wheel size
Changing wheel size (plus or minus sizing) while keeping the overall height keeps your speedometer right:
Frequently asked questions
Is 215/45R17 a 25 inch tire?
Not quite. 215/45R17 is 24.62 inches tall, between a 24 and a 25 inch tire.
What size is 215/45R17 in inches?
215/45R17 is 24.6 inches tall (overall diameter), 8.5 inches wide, with a 3.8 inch sidewall, and fits a 17 inch wheel.
What tire size is equivalent to 215/45R17?
Sizes within 1.5% of the same diameter on a 17" wheel: 225/45R17 (25.0"). Check load index and width before swapping.
What rim width fits 215/45R17?
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 215/45R17 make?
About 819 revolutions per mile in theory (circumference 77.3 in). Real tires turn slightly more because they flatten under load.