235/55 R19
What size is 235/55 R19?
235/55 R19 has an overall diameter of about 29.18 in, a section width of 9.25 in and a sidewall height of 5.09 in. It turns roughly 691 times per mile. Below are the exact figures plus in-tolerance plus/minus sizes you can switch to safely.
- Overall diameter: 29.18 in.
- Section width: 9.25 in.
- Sidewall height: 5.09 in.
- Revolutions: 430 /km · 691 /mi.
- In-tolerance sizes: 295/35 R21 (-0.2%).
Fitment verdict
295/35 R21 stays within the configured tolerance for 235/55 R19: -0.2% diameter and -0.2% speedometer effect.
| Metric | This size: 235/55 R19 | Alternative: 295/35 R21 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 29.18 in | 29.13 in | -0.2% | Within tolerance |
| Section width | 9.25 in | 11.61 in | +2.36 in | Computed difference |
| Sidewall height | 5.09 in | 4.06 in | -1.02 in | Computed difference |
| Circumference | 91.66 in | 91.51 in | -0.2% | Within tolerance |
| Speedo | 0.0% | -0.2% | -0.2% | 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 | 29.18 in |
|---|---|
| Section width | 9.25 in |
| Sidewall height | 5.09 in |
| Circumference | 91.66 in |
| Revolutions | 430 /km · 691 /mi |
In-tolerance sizes
Alternative sizes that stay within the safe diameter tolerance:
| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| 295/35 R21 | -0.2% | -0.2% | ✓ OK |
| 235/60 R18 | -0.3% | -0.3% | ✓ OK |
| 285/45 R19 | -0.3% | -0.3% | ✓ OK |
| 295/40 R20 | +0.4% | +0.4% | ✓ OK |
| 255/55 R18 | -0.5% | -0.5% | ✓ OK |
| 255/50 R19 | -0.5% | -0.5% | ✓ OK |
| 255/45 R20 | -0.5% | -0.5% | ✓ OK |
| 235/65 R17 | -0.5% | -0.5% | ✓ OK |
| 265/45 R20 | +0.7% | +0.7% | ✓ OK |
| 265/50 R19 | +0.9% | +0.9% | ✓ OK |
| 245/70 R16 | +1.1% | +1.1% | ✓ OK |
| 245/65 R17 | +1.2% | +1.2% | ✓ OK |
Compare sizes
- Within tolerance · Diameter -0.2%.
- Speedo @ 60: 60 mph → 59.9 mph.
- Sidewall -1.02 in · Width +2.36 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
- 29.18 in 29.13 in-0.05 in
- Sidewall
- 5.09 in 4.06 in-1.02 in
- Width
- 9.25 in 11.61 in+2.36 in
- Circumference
- 91.66 in 91.51 in-0.2%
- Revs / mile
- 691 692
- Speedo @ 60
- 60 mph 59.9 mph-0.2%
- Current —
235/55 R19 - New —
295/35 R21 - Grounded to the road: the axle rises -0.02 in.
Result report
235/55 R19 295/35 R21 · Within tolerance
Use this size when shopping: 295/35 R21
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 355/40R18 | +0.0% | +0.0% | |
OE 235/55R19 | +0.0% | +0.0% | |
+1″ 155/75R20 | -0.1% | -0.1% | |
+2″ 345/30R21 | -0.1% | -0.1% |
More tools
- How to read a tire size
- Plus sizing guide
- Speedometer error guide
- 235mm Section width guide
- /55 Aspect ratio guide
- Rim diameter 19"
- 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.