215/65 R16
What size is 215/65 R16?
215/65 R16 has an overall diameter of about 27.00 in, a section width of 8.46 in and a sidewall height of 5.50 in. It turns roughly 747 times per mile. Below are the exact figures plus plus/minus sizes that stay within the selected diameter tolerance.
- Overall diameter: 27.00 in.
- Section width: 8.46 in.
- Sidewall height: 5.50 in.
- Revolutions: 464 /km · 747 /mi.
- In-tolerance sizes: 255/35 R20 (+0.1%).
Geometric comparison
255/35 R20 stays within the configured tolerance for 215/65 R16: +0.1% diameter and +0.1% speedometer effect.
| Metric | This size: 215/65 R16 | Alternative: 255/35 R20 | Difference | Verdict |
|---|---|---|---|---|
| Overall diameter | 27.00 in | 27.03 in | +0.1% | Within tolerance |
| Section width | 8.46 in | 10.04 in | +1.57 in | Computed difference |
| Sidewall height | 5.50 in | 3.51 in | -1.99 in | Computed difference |
| Circumference | 84.84 in | 84.91 in | +0.1% | Within tolerance |
| Speedo | 0.0% | +0.1% | +0.1% | Within tolerance |
Seasonal check
Winter tire rules coming up?
Check tread depth, markings and local winter requirements before the first cold spell instead of waiting for the appointment rush.
What this geometry means
215/65 R16 has a taller-sidewall proportion. The marking combines nominal section width 8.46 in, sidewall ratio 65% and rim diameter 16 inches. One sidewall is 5.50 in; both sidewalls make up 41% of the 27.00 in overall diameter, while the rim makes up 59%.
Curated alternatives: 12 sizes, spanning -1.2% to +0.9% in nominal diameter versus 215/65 R16.
Width endpoints in that set are 215/70 R15 (+0.00 in) and 255/45 R18 (+1.57 in) relative to 215/65 R16.
At the nominal 84.84 in circumference, 1,000 rotations cover 2.15 km (1.34 mi); the inverse rates are 464/km and 747/mi.
The closest diameter entry is 255/35 R20 at +0.1%. Relative to 215/65 R16, it changes nominal section width by +1.57 in, each sidewall by -1.99 in and radius by +0.01 in.
Section-width mix versus 215/65 R16: 0 narrower, 2 equal-width and 10 wider entries.
This is a nominal geometry comparison only. Vehicle clearance, wheel width and offset, load and speed ratings, and manufacturer approval still require separate checks.
Specification
| Overall diameter | 27.00 in |
|---|---|
| Section width | 8.46 in |
| Sidewall height | 5.50 in |
| Circumference | 84.84 in |
| Revolutions | 464 /km · 747 /mi |
In-tolerance sizes
Alternative sizes that stay within the selected diameter tolerance:
| Size | Diameter | Speedo | Verdict |
|---|---|---|---|
| 255/35 R20 | +0.1% | +0.1% | ✓ OK |
| 255/40 R19 | +0.1% | +0.1% | ✓ OK |
| 255/45 R18 | +0.1% | +0.1% | ✓ OK |
| 235/60 R16 | +0.4% | +0.4% | ✓ OK |
| 215/70 R15 | -0.6% | -0.6% | ✓ OK |
| 215/60 R17 | +0.6% | +0.6% | ✓ OK |
| 235/55 R17 | +0.6% | +0.6% | ✓ OK |
| 235/50 R18 | +0.9% | +0.9% | ✓ OK |
| 245/35 R20 | -0.9% | -0.9% | ✓ OK |
| 225/55 R17 | -1.0% | -1.0% | ✓ OK |
| 245/40 R19 | -1.1% | -1.1% | ✓ OK |
| 245/45 R18 | -1.2% | -1.2% | ✓ OK |
Compare sizes
Editorial preset
These are TireFitLab editorial diameter-screening presets. Regional names choose a preset, not a national legal limit, ETRTO rule or vehicle approval. The AWD preset does not establish an allowable drivetrain mismatch. Use the exact vehicle and tyre manufacturer instructions; nominal geometry alone cannot approve fitment.
- Not recommended · This rating covers tire geometry only, not vehicle compatibility.
- Diameter +0.1% · Ride-height change +0.01 in.
- Speedometer reads low · 60 mph → 60.1 mph.
- Sidewall -1.99 in · Width +1.57 in.
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
- 27.00 in 27.03 in+0.02 in
- Sidewall
- 5.50 in 3.51 in-1.99 in
- Width
- 8.46 in 10.04 in+1.57 in
- Circumference
- 84.84 in 84.91 in+0.1%
- Revs / mile
- 747 746
- Speedo @ 60
- 60 mph 60.1 mph+0.1%
- Ride-height change
- 0.00 in +0.01 in
- True distance per 100 indicated
- 100 mi 100.1 mi+0.1%
- Current —
215/65 R16 - New —
255/35 R20 - Grounded to the road: the axle rises +0.01 in.
Tires and wheels in one comparison
Result report
215/65 R16 255/35 R20 · Not recommended · Within tolerance
Copy/print uses this page state only; TireFitLab does not create an account or store a server-side report.
Geometric estimate. Always verify physical clearance (arches, suspension, brakes) before fitting.
In-tolerance alternative sizes
| Size | Diameter | Speedo @ 100 | Use this |
|---|---|---|---|
−1″ 215/70R15 | -0.6% | -0.6% | |
OE 215/65R16 | +0.0% | +0.0% | |
+1″ 215/60R17 | +0.6% | +0.6% | |
+2″ 215/55R18 | +1.1% | +1.1% |
More tools
- How to read a tire size
- Plus sizing guide
- Speedometer change from tire size: calculation and limits
- Speedometer error calculator
- 215mm Section width guide
- /65 Aspect ratio guide
- Rim diameter 16"
- Load index chart
- Speed rating chart
- Rim width and tire fitment guide
- Wheel offset guide
- Wheel spacers guide
- Tire pressure for heavy loads and towing