215/45 R17
What size is 215/45 R17?
215/45 R17 has an overall diameter of about 24.62 in, a section width of 8.46 in and a sidewall height of 3.81 in. It turns roughly 819 times per mile. Below are the exact figures plus in-tolerance plus/minus sizes you can switch to safely.
- Overall diameter: 24.62 in.
- Section width: 8.46 in.
- Sidewall height: 3.81 in.
- Revolutions: 509 /km · 819 /mi.
- In-tolerance sizes: 205/60 R15 (+0.3%).
Fitment verdict
205/60 R15 stays within the configured tolerance for 215/45 R17: +0.3% diameter and +0.3% speedometer effect.
| Metric | This size: 215/45 R17 | Alternative: 205/60 R15 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 24.62 in | 24.69 in | +0.3% | Within tolerance |
| Section width | 8.46 in | 8.07 in | -0.39 in | Computed difference |
| Sidewall height | 3.81 in | 4.84 in | +1.03 in | Computed difference |
| Circumference | 77.34 in | 77.55 in | +0.3% | Within tolerance |
| Speedo | 0.0% | +0.3% | +0.3% | Within tolerance |
Seasonal check
Planning a long summer drive?
Use the budget and running-cost tools before a trip, especially if the current tyres are worn or the replacement size changes diameter.
Specification
| Overall diameter | 24.62 in |
|---|---|
| Section width | 8.46 in |
| Sidewall height | 3.81 in |
| Circumference | 77.34 in |
| Revolutions | 509 /km · 819 /mi |
In-tolerance sizes
Alternative sizes that stay within the safe diameter tolerance:
| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| 205/60 R15 | +0.3% | +0.3% | ✓ OK |
| 195/70 R14 | +0.5% | +0.5% | ✓ OK |
| 185/65 R15 | -0.6% | -0.6% | ✓ OK |
| 195/55 R16 | -0.7% | -0.7% | ✓ OK |
| 225/50 R16 | +1.0% | +1.0% | ✓ OK |
| 205/55 R16 | +1.1% | +1.1% | ✓ OK |
| 205/45 R17 | -1.4% | -1.4% | ✓ OK |
| 225/45 R17 | +1.4% | +1.4% | ✓ OK |
| 195/65 R15 | +1.5% | +1.5% | ✓ OK |
| 195/60 R15 | -1.6% | -1.6% | ✓ OK |
| 255/35 R18 | +1.7% | +1.7% | ✓ OK |
| 225/40 R18 | +1.9% | +1.9% | ✓ OK |
Compare sizes
- Within tolerance · Diameter +0.3%.
- Speedo @ 60: 60 mph → 60.2 mph.
- Sidewall +1.03 in · Width -0.39 in.
How this result is calculated
Computed from nominal tire-size geometry: diameter, circumference and speedometer error. It does not check wheel-arch, suspension or brake clearance.
Methodology- Diameter
- 24.62 in 24.69 in+0.07 in
- Sidewall
- 3.81 in 4.84 in+1.03 in
- Width
- 8.46 in 8.07 in-0.39 in
- Circumference
- 77.34 in 77.55 in+0.3%
- Revs / mile
- 819 817
- Speedo @ 60
- 60 mph 60.2 mph+0.3%
- Current —
215/45 R17 - New —
205/60 R15 - Grounded to the road: the axle rises +0.03 in.
Result report
215/45 R17 205/60 R15 · Within tolerance
Use this size when shopping: 205/60 R15
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 275/40R16 | +0.2% | +0.2% | |
OE 215/45R17 | +0.0% | +0.0% | |
+1″ 335/25R18 | -0.1% | -0.1% | |
+2″ 285/25R19 | -0.0% | -0.0% |
More tools
- How to read a tire size
- Plus sizing guide
- Speedometer error guide
- 215mm Section width guide
- /45 Aspect ratio guide
- Rim diameter 17"
- Load index chart
- Speed rating chart
- Rim width and tyre fitment guide
- Wheel offset guide
- Wheel spacers guide
- Tyre pressure for heavy loads and towing
What changed
- Reviewed deterministic geometry, load/speed references, sitemap inclusion and localized page shell.