Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/60-17 | 305/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.41 (797.8) | 33.81 (858.8) | 2.4 (61) 7.6% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 98.68 (2506.36) | 106.22 (2698) | 7.54 (191.64) 7.6% |
| Sidewall Height inches (mm) | 7.2 (183) | 8.41 (213.5) | 1.2 (30.5) 16.7% |
| Revolutions per mile (km) | 642.1 (398.98) | 596.5 (370.64) | -45.61 (-28.34) -7.1% |
305/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.53 mph (34.65 km/h) |
| 25 mph (40.23 km/h) | 26.91 mph (43.31 km/h) |
| 30 mph (48.28 km/h) | 32.29 mph (51.97 km/h) |
| 35 mph (56.33 km/h) | 37.68 mph (60.63 km/h) |
| 40 mph (64.37 km/h) | 43.06 mph (69.3 km/h) |
| 45 mph (72.42 km/h) | 48.44 mph (77.96 km/h) |
| 50 mph (80.47 km/h) | 53.82 mph (86.62 km/h) |
| 55 mph (88.51 km/h) | 59.21 mph (95.28 km/h) |
| 60 mph (96.56 km/h) | 64.59 mph (103.94 km/h) |
| 65 mph (104.61 km/h) | 69.97 mph (112.61 km/h) |
| 70 mph (112.65 km/h) | 75.35 mph (121.27 km/h) |
| 75 mph (120.7 km/h) | 80.73 mph (129.93 km/h) |
| 80 mph (128.75 km/h) | 86.12 mph (138.59 km/h) |
| 85 mph (136.79 km/h) | 91.5 mph (147.25 km/h) |
| 90 mph (144.84 km/h) | 96.88 mph (155.92 km/h) |
| 95 mph (152.89 km/h) | 102.26 mph (164.58 km/h) |
| 100 mph (160.93 km/h) | 107.65 mph (173.24 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1518 | 1763 | 1899 | 1983 | 2073 | 2138 | 2209 | 2293 | 2409 | 2526 | 2655 | 2758 | 2946 | 3152 | 3314 | 3417 | 3475 | 3688 | 3985 | 4631 |
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