33x12.50 R15 vs 35x12.50 R17
33x12.50 R15 vs 35x12.50 R17
35x12.50 R17 is outside the configured tolerance for 33x12.50 R15: +6.1% diameter and +6.1% speedometer effect.
Geometric comparison
35x12.50 R17 is outside the configured tolerance for 33x12.50 R15: +6.1% diameter and +6.1% speedometer effect.
| Metric | This size: 33x12.50 R15 | Alternative: 35x12.50 R17 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 33.00 in | 35.00 in | +6.1% | Too tall |
| Section width | 12.50 in | 12.50 in | 0.00 in | Computed difference |
| Sidewall height | 9.00 in | 9.00 in | 0.00 in | Computed difference |
| Circumference | 103.67 in | 109.96 in | +6.1% | Too tall |
| Speedo | 0.0% | +6.1% | +6.1% | Outside tolerance |
Compare sizes
Looks valid
Looks valid
Units
Not recommendedOut of tolerance · Diameter +6.1% (+2.00 in) · US (~3%)
- Not recommended · This rating covers tire geometry only, not vehicle compatibility.
- Diameter +6.1% · Ride-height change +1.00 in.
- Speedometer reads low · 60 mph → 63.6 mph.
- Sidewall +0.00 in · Width +0.00 in.
Diameter+6.1%+2.00 in
Speedo @ 60+6.1%60 mph → 63.6 mph
Sidewall+0.00 inWidth +0.00 in
Ride-height change+1.00 inDiameter ÷ 2
How this result is calculated
Computed from nominal tire-size geometry: diameter, circumference and speedometer error. It does not check vehicle placard approval, load/speed rating, rim-width range, wheel-arch, suspension or brake clearance.
MethodologyBefore fitting
- Check the vehicle placard and owner’s manual first.
- Match or exceed the required load index and speed rating.
- Confirm rim-width range, bolt pattern, hub bore, offset and fasteners.
- Inspect wheel-arch, suspension and brake clearance under real vehicle load.
- Check TPMS, cold pressure and local roadworthiness rules.
- Diameter
- 33.00 in 35.00 in+2.00 in
- Sidewall
- 9.00 in 9.00 in+0.00 in
- Width
- 12.50 in 12.50 in+0.00 in
- Circumference
- 103.67 in 109.96 in+6.1%
- Revs / mile
- 611 576
- Speedo @ 60
- 60 mph 63.6 mph+6.1%
- Ride-height change
- 0.00 in +1.00 in
- True distance per 100 indicated
- 100 mi 106.1 mi+6.1%
- Current —
33x12.50 R15 - New —
35x12.50 R17 - Grounded to the road: the axle rises +1.00 in.
Result report
33x12.50 R15 35x12.50 R17 · Not recommended · Out of tolerance
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Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
In-tolerance alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 345/70R14 | +0.0% | +0.0% | |
OE 305/75R15 | +0.0% | +0.0% | |
+1″ 335/65R16 | +0.4% | +0.4% |
33x12.50 R15 · 35x12.50 R17 · Methodology
- Technical check
- 2026-06-28
What changed
- Checked generated routes, metadata, sitemap inclusion and localized page rendering.