205/65 R15
What size is 205/65 R15?
205/65 R15 has an overall diameter of about 25.49 in, a section width of 8.07 in and a sidewall height of 5.25 in. It turns roughly 791 times per mile. Below are the exact figures plus in-tolerance plus/minus sizes you can switch to safely.
- Overall diameter: 25.49 in.
- Section width: 8.07 in.
- Sidewall height: 5.25 in.
- Revolutions: 492 /km · 791 /mi.
- In-tolerance sizes: 235/35 R19 (-0.1%).
Fitment verdict
235/35 R19 stays within the configured tolerance for 205/65 R15: -0.1% diameter and -0.1% speedometer effect.
| Metric | This size: 205/65 R15 | Alternative: 235/35 R19 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 25.49 in | 25.48 in | -0.1% | Within tolerance |
| Section width | 8.07 in | 9.25 in | +1.18 in | Computed difference |
| Sidewall height | 5.25 in | 3.24 in | -2.01 in | Computed difference |
| Circumference | 80.09 in | 80.04 in | -0.1% | Within tolerance |
| Speedo | 0.0% | -0.1% | -0.1% | 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 | 25.49 in |
|---|---|
| Section width | 8.07 in |
| Sidewall height | 5.25 in |
| Circumference | 80.09 in |
| Revolutions | 492 /km · 791 /mi |
In-tolerance sizes
Alternative sizes that stay within the safe diameter tolerance:
| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| 235/35 R19 | -0.1% | -0.1% | ✓ OK |
| 215/50 R17 | -0.1% | -0.1% | ✓ OK |
| 235/40 R18 | -0.4% | -0.4% | ✓ OK |
| 235/45 R17 | -0.6% | -0.6% | ✓ OK |
| 215/55 R16 | -0.7% | -0.7% | ✓ OK |
| 245/45 R17 | +0.7% | +0.7% | ✓ OK |
| 205/60 R16 | +0.8% | +0.8% | ✓ OK |
| 245/40 R18 | +0.9% | +0.9% | ✓ OK |
| 225/55 R16 | +1.0% | +1.0% | ✓ OK |
| 245/35 R19 | +1.0% | +1.0% | ✓ OK |
| 195/60 R16 | -1.1% | -1.1% | ✓ OK |
| 225/35 R19 | -1.1% | -1.1% | ✓ OK |
Compare sizes
- Within tolerance · Diameter -0.1%.
- Speedo @ 60: 60 mph → 60.0 mph.
- Sidewall -2.01 in · Width +1.18 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
- 25.49 in 25.48 in-0.02 in
- Sidewall
- 5.25 in 3.24 in-2.01 in
- Width
- 8.07 in 9.25 in+1.18 in
- Circumference
- 80.09 in 80.04 in-0.1%
- Revs / mile
- 791 792
- Speedo @ 60
- 60 mph 60.0 mph-0.1%
- Current —
205/65 R15 - New —
235/35 R19 - Grounded to the road: the axle rises -0.01 in.
Result report
205/65 R15 235/35 R19 · Within tolerance
Use this size when shopping: 235/35 R19
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 265/55R14 | -0.1% | -0.1% | |
OE 205/65R15 | +0.0% | +0.0% | |
+1″ 345/35R16 | +0.1% | +0.1% | |
+2″ 135/80R17 | +0.0% | +0.0% |
More tools
- How to read a tire size
- Plus sizing guide
- Speedometer error guide
- 205mm Section width guide
- /65 Aspect ratio guide
- Rim diameter 15"
- 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.