225/65 R17
What size is 225/65 R17?
225/65 R17 has an overall diameter of about 28.52 in, a section width of 8.86 in and a sidewall height of 5.76 in. It turns roughly 707 times per mile. Below are the exact figures plus in-tolerance plus/minus sizes you can switch to safely.
- Overall diameter: 28.52 in.
- Section width: 8.86 in.
- Sidewall height: 5.76 in.
- Revolutions: 439 /km · 707 /mi.
- In-tolerance sizes: 275/40 R20 (+0.5%).
Fitment verdict
275/40 R20 stays within the configured tolerance for 225/65 R17: +0.5% diameter and +0.5% speedometer effect.
| Metric | This size: 225/65 R17 | Alternative: 275/40 R20 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 28.52 in | 28.66 in | +0.5% | Within tolerance |
| Section width | 8.86 in | 10.83 in | +1.97 in | Computed difference |
| Sidewall height | 5.76 in | 4.33 in | -1.43 in | Computed difference |
| Circumference | 89.58 in | 90.04 in | +0.5% | Within tolerance |
| Speedo | 0.0% | +0.5% | +0.5% | 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 | 28.52 in |
|---|---|
| Section width | 8.86 in |
| Sidewall height | 5.76 in |
| Circumference | 89.58 in |
| Revolutions | 439 /km · 707 /mi |
In-tolerance sizes
Alternative sizes that stay within the safe diameter tolerance:
| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| 275/40 R20 | +0.5% | +0.5% | ✓ OK |
| 245/45 R20 | +0.6% | +0.6% | ✓ OK |
| 275/45 R19 | +0.8% | +0.8% | ✓ OK |
| 235/50 R19 | -0.9% | -0.9% | ✓ OK |
| 235/55 R18 | -1.2% | -1.2% | ✓ OK |
| 235/60 R17 | -1.4% | -1.4% | ✓ OK |
| 255/45 R19 | -1.7% | -1.7% | ✓ OK |
| 235/65 R16 | -1.7% | -1.7% | ✓ OK |
| 255/35 R21 | -1.7% | -1.7% | ✓ OK |
| 215/65 R17 | -1.8% | -1.8% | ✓ OK |
| 235/65 R17 | +1.8% | +1.8% | ✓ OK |
| 255/45 R20 | +1.8% | +1.8% | ✓ OK |
Compare sizes
- Within tolerance · Diameter +0.5%.
- Speedo @ 60: 60 mph → 60.3 mph.
- Sidewall -1.43 in · Width +1.97 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
- 28.52 in 28.66 in+0.15 in
- Sidewall
- 5.76 in 4.33 in-1.43 in
- Width
- 8.86 in 10.83 in+1.97 in
- Circumference
- 89.58 in 90.04 in+0.5%
- Revs / mile
- 707 704
- Speedo @ 60
- 60 mph 60.3 mph+0.5%
- Current —
225/65 R17 - New —
275/40 R20 - Grounded to the road: the axle rises +0.07 in.
Result report
225/65 R17 275/40 R20 · Within tolerance
Use this size when shopping: 275/40 R20
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 265/60R16 | +0.0% | +0.0% | |
OE 225/65R17 | +0.0% | +0.0% | |
+1″ 205/65R18 | -0.1% | -0.1% | |
+2″ 345/35R19 | -0.0% | -0.0% |
More tools
- How to read a tire size
- Plus sizing guide
- Speedometer error guide
- 225mm Section width guide
- /65 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.