Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 70/80-17 | 90/90-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.41 (543.8) | 23.38 (593.8) | 1.97 (50) 9.2% |
| Width inches (mm) | 2.76 (70) | 3.54 (90) | 0.79 (20) 28.6% |
| Circum. inches (mm) | 67.26 (1708.4) | 73.44 (1865.48) | 6.18 (157.08) 9.2% |
| Sidewall Height inches (mm) | 2.2 (56) | 3.19 (81) | 0.98 (25) 44.6% |
| Revolutions per mile (km) | 942.02 (585.34) | 862.7 (536.05) | -79.32 (-49.29) -8.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.84 mph (35.15 km/h) |
| 25 mph (40.23 km/h) | 27.3 mph (43.93 km/h) |
| 30 mph (48.28 km/h) | 32.76 mph (52.72 km/h) |
| 35 mph (56.33 km/h) | 38.22 mph (61.51 km/h) |
| 40 mph (64.37 km/h) | 43.68 mph (70.29 km/h) |
| 45 mph (72.42 km/h) | 49.14 mph (79.08 km/h) |
| 50 mph (80.47 km/h) | 54.6 mph (87.87 km/h) |
| 55 mph (88.51 km/h) | 60.06 mph (96.65 km/h) |
| 60 mph (96.56 km/h) | 65.52 mph (105.44 km/h) |
| 65 mph (104.61 km/h) | 70.98 mph (114.23 km/h) |
| 70 mph (112.65 km/h) | 76.44 mph (123.01 km/h) |
| 75 mph (120.7 km/h) | 81.9 mph (131.8 km/h) |
| 80 mph (128.75 km/h) | 87.36 mph (140.59 km/h) |
| 85 mph (136.79 km/h) | 92.82 mph (149.37 km/h) |
| 90 mph (144.84 km/h) | 98.28 mph (158.16 km/h) |
| 95 mph (152.89 km/h) | 103.73 mph (166.95 km/h) |
| 100 mph (160.93 km/h) | 109.19 mph (175.73 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2195 | 2550 | 2747 | 2868 | 2999 | 3092 | 3195 | 3316 | 3485 | 3653 | 3840 | 3989 | 4260 | 4559 | 4793 | 4942 | 5026 | 5334 | 5764 | 6698 |
Better Fuel Economy Factory Ratios Increased Power
