Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 80/70-17 | 305/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 36.21 (919.8) | 14.8 (376) 69.1% |
| Width inches (mm) | 3.15 (80) | 12.01 (305) | 8.86 (225) 281.3% |
| Circum. inches (mm) | 67.26 (1708.4) | 113.77 (2889.64) | 46.51 (1181.24) 69.1% |
| Sidewall Height inches (mm) | 2.2 (56) | 9.61 (244) | 7.4 (188) 335.7% |
| Revolutions per mile (km) | 942.02 (585.34) | 556.94 (346.06) | -385.08 (-239.28) -40.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 33.83 mph (54.44 km/h) |
| 25 mph (40.23 km/h) | 42.29 mph (68.05 km/h) |
| 30 mph (48.28 km/h) | 50.74 mph (81.66 km/h) |
| 35 mph (56.33 km/h) | 59.2 mph (95.27 km/h) |
| 40 mph (64.37 km/h) | 67.66 mph (108.88 km/h) |
| 45 mph (72.42 km/h) | 76.11 mph (122.49 km/h) |
| 50 mph (80.47 km/h) | 84.57 mph (136.1 km/h) |
| 55 mph (88.51 km/h) | 93.03 mph (149.72 km/h) |
| 60 mph (96.56 km/h) | 101.49 mph (163.33 km/h) |
| 65 mph (104.61 km/h) | 109.94 mph (176.94 km/h) |
| 70 mph (112.65 km/h) | 118.4 mph (190.55 km/h) |
| 75 mph (120.7 km/h) | 126.86 mph (204.16 km/h) |
| 80 mph (128.75 km/h) | 135.31 mph (217.77 km/h) |
| 85 mph (136.79 km/h) | 143.77 mph (231.38 km/h) |
| 90 mph (144.84 km/h) | 152.23 mph (244.99 km/h) |
| 95 mph (152.89 km/h) | 160.69 mph (258.6 km/h) |
| 100 mph (160.93 km/h) | 169.14 mph (272.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1417 | 1646 | 1773 | 1852 | 1936 | 1996 | 2063 | 2141 | 2250 | 2358 | 2479 | 2575 | 2750 | 2943 | 3094 | 3190 | 3245 | 3444 | 3721 | 4324 |
Better Fuel Economy Factory Ratios Increased Power
