215/45R17 dimensions
| Measure | Inches | Millimetres |
|---|---|---|
| Overall height | 24.62 in | 625 mm |
| Section width | 8.46 in | 215 mm |
| Sidewall height | 3.81 in | 96.8 mm |
| Wheel diameter | 17 in | 432 mm |
| Circumference | 77.3 in | 1,964 mm |
| Revolutions per mile | 819.2 |
The math
| Step | Math | Result |
|---|---|---|
| Sidewall | 215 × 45% = 96.8 mm ÷ 25.4 | 3.81 in |
| Overall height | 17 + 2 × 3.81 | 24.62 in |
| Width | 215 mm ÷ 25.4 | 8.46 in |
| Circumference | π × 24.62 | 77.3 in |
| Revs per mile | 63,360 ÷ 77.3 | 819.2 |
With a 3.8 in sidewall this is a medium sidewall: a balance of cushion and response. Real tires vary by brand and model, and the loaded radius under the vehicle is a bit smaller than this unloaded figure.
One step either way on a 17 in wheel
Each row changes one thing and shows the height change against 215/45R17, plus what 60 mph on the speedometer would really be if you swapped to that size.
| Change | Size | Height | Height change | 60 mph shows as | Verdict |
|---|---|---|---|---|---|
| Wider | 225/45R17 (compare) | 25.0 in | +1.4% | 60.9 mph | Close match |
| Narrower | 205/45R17 (compare) | 24.3 in | -1.4% | 59.1 mph | Close match |
| Taller sidewall | 215/50R17 (compare) | 25.5 in | +3.4% | 62.1 mph | Check clearance |
| Shorter sidewall | 215/40R17 (compare) | 23.8 in | -3.4% | 57.9 mph | Check clearance |
| Wider, shorter sidewall | 225/40R17 (compare) | 24.1 in | -2.2% | 58.7 mph | Close match |
| Narrower, taller sidewall | 205/50R17 (compare) | 25.1 in | +1.8% | 61.1 mph | Close match |
Calculated sizes within ±3% on other wheels
Plus and minus sizes that keep the overall height within about 3% (a rule of thumb from Discount Tire and 1010tires), widths within 30 mm. Calculated, not a list of tires on sale: check that a tire exists in that size.
16 in wheels (one wheel size smaller)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 245/45R16 (compare) | 24.7 in | +0.3% | +30 mm |
| 185/60R16 (compare) | 24.7 in | +0.5% | -30 mm |
| 215/50R16 (compare) | 24.5 in | -0.6% | +0 mm |
| 195/55R16 (compare) | 24.4 in | -0.7% | -20 mm |
18 in wheels (one wheel size larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 185/45R18 (compare) | 24.6 in | -0.3% | -30 mm |
| 245/35R18 (compare) | 24.8 in | +0.5% | +30 mm |
| 235/35R18 (compare) | 24.5 in | -0.6% | +20 mm |
| 215/40R18 (compare) | 24.8 in | +0.6% | +0 mm |
19 in wheels (two wheel sizes larger)
| Size | Height | Height change | Width change |
|---|---|---|---|
| 205/35R19 (compare) | 24.6 in | +0.1% | -10 mm |
| 235/30R19 (compare) | 24.6 in | -0.3% | +20 mm |
| 245/30R19 (compare) | 24.8 in | +0.7% | +30 mm |
| 185/40R19 (compare) | 24.8 in | +0.8% | -30 mm |
Try it with your numbers
Compare 215/45R17 with another size · Convert to metric or find a 33 in size · Sizes that fit my wheel
Calculated from the size alone. Real tires vary a little by brand and model, and the loaded radius is a bit smaller. Confirm the wheel width range, clearance, load index and speed rating for your vehicle. See how to read a tire size, the load index chart and the speed rating chart.
Browse: all sizes in inches · 205/50R17 · 215/50R17.