Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/90-16 | 215/45-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.57 (649.4) | 25.62 (650.7) | 0.05 (1.3) 0.2% |
| Width inches (mm) | 5.31 (135) | 8.46 (215) | 3.15 (80) 59.3% |
| Circum. inches (mm) | 80.32 (2040.15) | 80.48 (2044.23) | 0.16 (4.08) 0.2% |
| Sidewall Height inches (mm) | 4.78 (121.5) | 3.81 (96.75) | -0.97 (-24.75) -20.4% |
| Revolutions per mile (km) | 788.84 (490.16) | 787.26 (489.18) | -1.58 (-0.98) -0.2% |
215/45-18 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.04 mph (32.25 km/h) |
| 25 mph (40.23 km/h) | 25.05 mph (40.31 km/h) |
| 30 mph (48.28 km/h) | 30.06 mph (48.38 km/h) |
| 35 mph (56.33 km/h) | 35.07 mph (56.44 km/h) |
| 40 mph (64.37 km/h) | 40.08 mph (64.5 km/h) |
| 45 mph (72.42 km/h) | 45.09 mph (72.57 km/h) |
| 50 mph (80.47 km/h) | 50.1 mph (80.63 km/h) |
| 55 mph (88.51 km/h) | 55.11 mph (88.69 km/h) |
| 60 mph (96.56 km/h) | 60.12 mph (96.75 km/h) |
| 65 mph (104.61 km/h) | 65.13 mph (104.82 km/h) |
| 70 mph (112.65 km/h) | 70.14 mph (112.88 km/h) |
| 75 mph (120.7 km/h) | 75.15 mph (120.94 km/h) |
| 80 mph (128.75 km/h) | 80.16 mph (129.01 km/h) |
| 85 mph (136.79 km/h) | 85.17 mph (137.07 km/h) |
| 90 mph (144.84 km/h) | 90.18 mph (145.13 km/h) |
| 95 mph (152.89 km/h) | 95.19 mph (153.19 km/h) |
| 100 mph (160.93 km/h) | 100.2 mph (161.26 km/h) |
| 2.35 | 2.73 | 2.94 | 3.07 | 3.21 | 3.31 | 3.42 | 3.55 | 3.73 | 3.91 | 4.11 | 4.27 | 4.56 | 4.88 | 5.13 | 5.29 | 5.38 | 5.71 | 6.17 | 7.17 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003 | 2327 | 2506 | 2617 | 2737 | 2822 | 2916 | 3026 | 3180 | 3333 | 3504 | 3640 | 3887 | 4160 | 4373 | 4510 | 4587 | 4868 | 5260 | 6113 |
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