165/70 R14
What size is 165/70 R14?
165/70 R14 has an overall diameter of about 23.09 in, a section width of 6.50 in and a sidewall height of 4.55 in. It turns roughly 873 times per mile. Below are the exact figures plus in-tolerance plus/minus sizes you can switch to safely.
- Overall diameter: 23.09 in.
- Section width: 6.50 in.
- Sidewall height: 4.55 in.
- Revolutions: 543 /km · 873 /mi.
- In-tolerance sizes: 185/55 R15 (-0.4%).
Fitment verdict
185/55 R15 stays within the configured tolerance for 165/70 R14: -0.4% diameter and -0.4% speedometer effect.
| Metric | This size: 165/70 R14 | Alternative: 185/55 R15 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 23.09 in | 23.01 in | -0.4% | Within tolerance |
| Section width | 6.50 in | 7.28 in | +0.79 in | Computed difference |
| Sidewall height | 4.55 in | 4.01 in | -0.54 in | Computed difference |
| Circumference | 72.55 in | 72.29 in | -0.4% | Within tolerance |
| Speedo | 0.0% | -0.4% | -0.4% | 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 | 23.09 in |
|---|---|
| Section width | 6.50 in |
| Sidewall height | 4.55 in |
| Circumference | 72.55 in |
| Revolutions | 543 /km · 873 /mi |
In-tolerance sizes
Alternative sizes that stay within the safe diameter tolerance:
| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| 185/55 R15 | -0.4% | -0.4% | ✓ OK |
| 175/65 R14 | -0.6% | -0.6% | ✓ OK |
| 195/55 R15 | +1.5% | +1.5% | ✓ OK |
| 185/60 R14 | -1.5% | -1.5% | ✓ OK |
| 185/65 R14 | +1.6% | +1.6% | ✓ OK |
Compare sizes
- Within tolerance · Diameter -0.4%.
- Speedo @ 60: 60 mph → 59.8 mph.
- Sidewall -0.54 in · Width +0.79 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
- 23.09 in 23.01 in-0.08 in
- Sidewall
- 4.55 in 4.01 in-0.54 in
- Width
- 6.50 in 7.28 in+0.79 in
- Circumference
- 72.55 in 72.29 in-0.4%
- Revs / mile
- 873 876
- Speedo @ 60
- 60 mph 59.8 mph-0.4%
- Current —
165/70 R14 - New —
185/55 R15 - Grounded to the road: the axle rises -0.04 in.
Result report
165/70 R14 185/55 R15 · Within tolerance
Use this size when shopping: 185/55 R15
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
Safe alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 285/45R13 | +0.0% | +0.0% | |
OE 165/70R14 | +0.0% | +0.0% | |
+1″ 205/50R15 | -0.1% | -0.1% | |
+2″ 225/40R16 | -0.0% | -0.0% |
More tools
- How to read a tire size
- Plus sizing guide
- Speedometer error guide
- 165mm Section width guide
- /70 Aspect ratio guide
- Rim diameter 14"
- 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.