Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/60-20 | 215/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 26.31 (668.3) | -0.54 (-13.7) -2% |
| Width inches (mm) | 5.71 (145) | 8.46 (215) | 2.76 (70) 48.3% |
| Circum. inches (mm) | 84.35 (2142.57) | 82.66 (2099.53) | -1.69 (-43.04) -2% |
| Sidewall Height inches (mm) | 3.43 (87) | 4.66 (118.25) | 1.23 (31.25) 35.9% |
| Revolutions per mile (km) | 751.13 (466.73) | 766.53 (476.3) | 15.4 (9.57) 2% |
215/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.6 mph (31.54 km/h) |
| 25 mph (40.23 km/h) | 24.5 mph (39.43 km/h) |
| 30 mph (48.28 km/h) | 29.4 mph (47.31 km/h) |
| 35 mph (56.33 km/h) | 34.3 mph (55.2 km/h) |
| 40 mph (64.37 km/h) | 39.2 mph (63.08 km/h) |
| 45 mph (72.42 km/h) | 44.1 mph (70.97 km/h) |
| 50 mph (80.47 km/h) | 49 mph (78.85 km/h) |
| 55 mph (88.51 km/h) | 53.9 mph (86.74 km/h) |
| 60 mph (96.56 km/h) | 58.79 mph (94.62 km/h) |
| 65 mph (104.61 km/h) | 63.69 mph (102.51 km/h) |
| 70 mph (112.65 km/h) | 68.59 mph (110.39 km/h) |
| 75 mph (120.7 km/h) | 73.49 mph (118.28 km/h) |
| 80 mph (128.75 km/h) | 78.39 mph (126.16 km/h) |
| 85 mph (136.79 km/h) | 83.29 mph (134.05 km/h) |
| 90 mph (144.84 km/h) | 88.19 mph (141.93 km/h) |
| 95 mph (152.89 km/h) | 93.09 mph (149.82 km/h) |
| 100 mph (160.93 km/h) | 97.99 mph (157.7 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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