285/40 R22 vs 31x10.50 R15
285/40 R22 vs 31x10.50 R15
31x10.50 R15 stays within the configured tolerance for 285/40 R22: +0.1% diameter and +0.1% speedometer effect.
Fitment verdict
31x10.50 R15 stays within the configured tolerance for 285/40 R22: +0.1% diameter and +0.1% speedometer effect.
| Metric | This size: 285/40 R22 | Alternative: 31x10.50 R15 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 30.98 in | 31.00 in | +0.1% | Within tolerance |
| Section width | 11.22 in | 10.50 in | -0.72 in | Computed difference |
| Sidewall height | 4.49 in | 8.00 in | +3.51 in | Computed difference |
| Circumference | 97.32 in | 97.39 in | +0.1% | Within tolerance |
| Speedo | 0.0% | +0.1% | +0.1% | Within tolerance |
Compare sizes
Looks valid
Looks valid
Units
✓ Within toleranceDiameter +0.1% (+0.02 in) · US (~3%)
- Within tolerance · Diameter +0.1%.
- Speedo @ 60: 60 mph → 60.0 mph.
- Sidewall +3.51 in · Width -0.72 in.
Diameter+0.1%+0.02 in
Speedo @ 60+0.1%60 mph → 60.0 mph
Sidewall+3.51 inWidth -0.72 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
- 30.98 in 31.00 in+0.02 in
- Sidewall
- 4.49 in 8.00 in+3.51 in
- Width
- 11.22 in 10.50 in-0.72 in
- Circumference
- 97.32 in 97.39 in+0.1%
- Revs / mile
- 651 651
- Speedo @ 60
- 60 mph 60.0 mph+0.1%
- Current —
285/40 R22 - New —
31x10.50 R15 - Grounded to the road: the axle rises +0.01 in.
Result report
285/40 R22 31x10.50 R15 · Within tolerance
Use this size when shopping: 31x10.50 R15
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 195/65R21 | +0.0% | +0.0% | |
OE 285/40R22 | +0.0% | +0.0% | |
+1″ 135/75R23 | -0.0% | -0.0% | |
+2″ 295/30R24 | -0.0% | -0.0% |
285/40 R22 · 31x10.50 R15 · Methodology
What changed
- Reviewed deterministic geometry, load/speed references, sitemap inclusion and localized page shell.