255/35 R20 vs 255/40 R19
255/35 R20 vs 255/40 R19
255/40 R19 stays within the configured tolerance for 255/35 R20: 0.0% diameter and 0.0% speedometer effect.
Fitment verdict
255/40 R19 stays within the configured tolerance for 255/35 R20: 0.0% diameter and 0.0% speedometer effect.
| Metric | This size: 255/35 R20 | Alternative: 255/40 R19 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 27.03 in | 27.03 in | 0.0% | Within tolerance |
| Section width | 10.04 in | 10.04 in | 0.00 in | Computed difference |
| Sidewall height | 3.51 in | 4.02 in | +0.50 in | Computed difference |
| Circumference | 84.91 in | 84.92 in | 0.0% | Within tolerance |
| Speedo | 0.0% | 0.0% | 0.0% | Within tolerance |
Compare sizes
Looks valid
Looks valid
Units
✓ Within toleranceDiameter +0.0% (+0.00 in) · US (~3%)
- Within tolerance · Diameter +0.0%.
- Speedo @ 60: 60 mph → 60.0 mph.
- Sidewall +0.50 in · Width +0.00 in.
Diameter+0.0%+0.00 in
Speedo @ 60+0.0%60 mph → 60.0 mph
Sidewall+0.50 inWidth +0.00 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
- 27.03 in 27.03 in+0.00 in
- Sidewall
- 3.51 in 4.02 in+0.50 in
- Width
- 10.04 in 10.04 in+0.00 in
- Circumference
- 84.91 in 84.92 in+0.0%
- Revs / mile
- 746 746
- Speedo @ 60
- 60 mph 60.0 mph+0.0%
- Current —
255/35 R20 - New —
255/40 R19 - Grounded to the road: the axle rises +0.00 in.
Result report
255/35 R20 255/40 R19 · Within tolerance
Use this size when shopping: 255/40 R19
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 255/40R19 | +0.0% | +0.0% | |
OE 255/35R20 | +0.0% | +0.0% | |
+1″ 255/30R21 | -0.0% | -0.0% | |
+2″ 255/25R22 | -0.0% | -0.0% |
255/35 R20 · 255/40 R19 · Methodology
What changed
- Reviewed deterministic geometry, load/speed references, sitemap inclusion and localized page shell.