215/50R18 tire size
A 215/50R18 tire is 26.46 inches (672.2 mm) tall, 8.46 in (215 mm) wide and fits a 18-inch wheel. In inch notation it is roughly a 26.5x8.5R18.
| Overall diameter | 26.46 in | 672.2 mm |
|---|---|---|
| Section width | 8.46 in | 215 mm |
| Sidewall height | 4.23 in | 107.5 mm |
| Circumference | 83.14 in | 2,112 mm |
| Revolutions | 762.1 per mile | 473.5 per km |
| Rim diameter | 18 in | 457.2 mm |
Compare 215/50R18 with another size
Alternative sizes on the same 18-inch wheel
Sizes in use within ±3 % of the overall diameter of 215/50R18:
Plus and minus sizes for 215/50R18
| Size | Wheel | Diameter | Difference |
|---|---|---|---|
| 205/65R16 | Minus 2 (16 in) | 26.49 in | +0.10% |
| 245/55R16 | Minus 2 (16 in) | 26.61 in | +0.55% |
| 225/60R16 | Minus 2 (16 in) | 26.63 in | +0.62% |
| 195/70R16 | Minus 2 (16 in) | 26.75 in | +1.07% |
| 215/55R17 | Minus 1 (17 in) | 26.31 in | −0.58% |
| 245/50R17 | Minus 1 (17 in) | 26.65 in | +0.68% |
| 235/50R17 | Minus 1 (17 in) | 26.25 in | −0.80% |
| 205/60R17 | Minus 1 (17 in) | 26.69 in | +0.83% |
| 235/40R19 | Plus 1 (19 in) | 26.40 in | −0.24% |
| 265/35R19 | Plus 1 (19 in) | 26.30 in | −0.61% |
| 195/50R19 | Plus 1 (19 in) | 26.68 in | +0.80% |
| 245/40R19 | Plus 1 (19 in) | 26.72 in | +0.95% |
| 235/35R20 | Plus 2 (20 in) | 26.48 in | +0.04% |
| 265/30R20 | Plus 2 (20 in) | 26.26 in | −0.77% |
| 225/35R20 | Plus 2 (20 in) | 26.20 in | −1.00% |
| 245/35R20 | Plus 2 (20 in) | 26.75 in | +1.09% |
Vehicles approved with 215/50R18 tires
Models whose Swiss type approval lists 215/50R18 as a standard or optional size (1,373 approvals in total). Always check your own vehicle's placard or papers.
- Volkswagen T-Roc
- Audi Q2
- SEAT Ateca
- Skoda Karoq
- Mazda CX-3
- Ford Focus
- Ford Puma
- Toyota Yaris
- SsangYong Tivoli
- MG ZS
- Kg Mobility Tivoli
- Kia EV2
- BYD Seal
- SsangYong XLV
- Hyundai Ioniq
- Audi SQ2
Source: Swiss Federal Roads Office (FEDRO/ASTRA), open government data. Original data (downloaded 2026-09-29). Data processed by us; errors in processing are ours, not the publisher's.
Nearby 18-inch sizes
- 195/55R18 (−0.1%)
- 195/60R18 (+2.8%)
- 205/40R18 (−7.6%)
- 205/45R18 (−4.5%)
- 205/55R18 (+1.6%)
- 205/60R18 (+4.6%)
- 215/40R18 (−6.4%)
- 215/45R18 (−3.2%)
- 215/55R18 (+3.2%)
- 215/60R18 (+6.4%)
- 225/40R18 (−5.2%)
- 225/45R18 (−1.9%)
- 225/50R18 (+1.5%)
- 225/55R18 (+4.8%)
- 225/60R18 (+8.2%)
- 235/40R18 (−4.0%)
- 235/45R18 (−0.5%)
- 235/50R18 (+3.0%)
- 235/55R18 (+6.5%)
- 235/60R18 (+10.0%)
Reading the 215/50R18 size
- 215 — section width in millimetres (8.46 in).
- 50 — aspect ratio: the sidewall is 50 % of the width, 107.5 mm.
- R — radial construction (ZR on the sidewall means a high-speed rated radial; the dimensions are the same).
- 18 — fits a 18-inch diameter wheel.
The load index and speed rating (for example 91V) follow the size on the sidewall. They must meet at least the values on your vehicle's tire placard.