Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 305/70-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 33.81 (858.8) | 12.4 (315) 57.9% |
| Width inches (mm) | 3.15 (80) | 12.01 (305) | 8.86 (225) 281.3% |
| Circum. inches (mm) | 67.26 (1708.4) | 106.22 (2698) | 38.96 (989.6) 57.9% |
| Sidewall Height inches (mm) | 2.2 (56) | 8.41 (213.5) | 6.2 (157.5) 281.3% |
| Revolutions per mile (km) | 942.02 (585.34) | 596.5 (370.64) | -345.52 (-214.7) -36.7% |
305/70-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 31.59 mph (50.83 km/h) |
| 25 mph (40.23 km/h) | 39.48 mph (63.54 km/h) |
| 30 mph (48.28 km/h) | 47.38 mph (76.25 km/h) |
| 35 mph (56.33 km/h) | 55.27 mph (88.96 km/h) |
| 40 mph (64.37 km/h) | 63.17 mph (101.66 km/h) |
| 45 mph (72.42 km/h) | 71.07 mph (114.37 km/h) |
| 50 mph (80.47 km/h) | 78.96 mph (127.08 km/h) |
| 55 mph (88.51 km/h) | 86.86 mph (139.79 km/h) |
| 60 mph (96.56 km/h) | 94.76 mph (152.49 km/h) |
| 65 mph (104.61 km/h) | 102.65 mph (165.2 km/h) |
| 70 mph (112.65 km/h) | 110.55 mph (177.91 km/h) |
| 75 mph (120.7 km/h) | 118.44 mph (190.62 km/h) |
| 80 mph (128.75 km/h) | 126.34 mph (203.33 km/h) |
| 85 mph (136.79 km/h) | 134.24 mph (216.03 km/h) |
| 90 mph (144.84 km/h) | 142.13 mph (228.74 km/h) |
| 95 mph (152.89 km/h) | 150.03 mph (241.45 km/h) |
| 100 mph (160.93 km/h) | 157.93 mph (254.16 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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