Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-18 | 215/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.13 (689.2) | 26.31 (668.3) | -0.82 (-20.9) -3% |
| Width inches (mm) | 5.71 (145) | 8.46 (215) | 2.76 (70) 48.3% |
| Circum. inches (mm) | 85.24 (2165.19) | 82.66 (2099.53) | -2.59 (-65.66) -3% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.66 (118.25) | 0.09 (2.25) 1.9% |
| Revolutions per mile (km) | 743.28 (461.85) | 766.53 (476.3) | 23.24 (14.44) 3.1% |
215/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.39 mph (31.21 km/h) |
| 25 mph (40.23 km/h) | 24.24 mph (39.01 km/h) |
| 30 mph (48.28 km/h) | 29.09 mph (46.82 km/h) |
| 35 mph (56.33 km/h) | 33.94 mph (54.62 km/h) |
| 40 mph (64.37 km/h) | 38.79 mph (62.42 km/h) |
| 45 mph (72.42 km/h) | 43.64 mph (70.22 km/h) |
| 50 mph (80.47 km/h) | 48.48 mph (78.03 km/h) |
| 55 mph (88.51 km/h) | 53.33 mph (85.83 km/h) |
| 60 mph (96.56 km/h) | 58.18 mph (93.63 km/h) |
| 65 mph (104.61 km/h) | 63.03 mph (101.44 km/h) |
| 70 mph (112.65 km/h) | 67.88 mph (109.24 km/h) |
| 75 mph (120.7 km/h) | 72.73 mph (117.04 km/h) |
| 80 mph (128.75 km/h) | 77.57 mph (124.84 km/h) |
| 85 mph (136.79 km/h) | 82.42 mph (132.65 km/h) |
| 90 mph (144.84 km/h) | 87.27 mph (140.45 km/h) |
| 95 mph (152.89 km/h) | 92.12 mph (148.25 km/h) |
| 100 mph (160.93 km/h) | 96.97 mph (156.05 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1951 | 2266 | 2440 | 2548 | 2665 | 2748 | 2839 | 2947 | 3096 | 3246 | 3412 | 3544 | 3785 | 4051 | 4258 | 4391 | 4466 | 4740 | 5122 | 5952 |
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