Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 100/80-17 | 120/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.3 (591.8) | 24.56 (623.8) | 1.26 (32) 5.4% |
| Width inches (mm) | 3.94 (100) | 4.72 (120) | 0.79 (20) 20% |
| Circum. inches (mm) | 73.2 (1859.19) | 77.15 (1959.73) | 3.96 (100.53) 5.4% |
| Sidewall Height inches (mm) | 3.15 (80) | 3.78 (96) | 0.63 (16) 20% |
| Revolutions per mile (km) | 865.61 (537.87) | 821.21 (510.27) | -44.4 (-27.59) -5.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.08 mph (33.93 km/h) |
| 25 mph (40.23 km/h) | 26.35 mph (42.41 km/h) |
| 30 mph (48.28 km/h) | 31.62 mph (50.89 km/h) |
| 35 mph (56.33 km/h) | 36.89 mph (59.37 km/h) |
| 40 mph (64.37 km/h) | 42.16 mph (67.85 km/h) |
| 45 mph (72.42 km/h) | 47.43 mph (76.34 km/h) |
| 50 mph (80.47 km/h) | 52.7 mph (84.82 km/h) |
| 55 mph (88.51 km/h) | 57.97 mph (93.3 km/h) |
| 60 mph (96.56 km/h) | 63.24 mph (101.78 km/h) |
| 65 mph (104.61 km/h) | 68.51 mph (110.26 km/h) |
| 70 mph (112.65 km/h) | 73.79 mph (118.75 km/h) |
| 75 mph (120.7 km/h) | 79.06 mph (127.23 km/h) |
| 80 mph (128.75 km/h) | 84.33 mph (135.71 km/h) |
| 85 mph (136.79 km/h) | 89.6 mph (144.19 km/h) |
| 90 mph (144.84 km/h) | 94.87 mph (152.67 km/h) |
| 95 mph (152.89 km/h) | 100.14 mph (161.15 km/h) |
| 100 mph (160.93 km/h) | 105.41 mph (169.64 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2090 | 2428 | 2614 | 2730 | 2855 | 2944 | 3041 | 3157 | 3317 | 3477 | 3655 | 3797 | 4055 | 4340 | 4562 | 4704 | 4784 | 5078 | 5487 | 6376 |
Better Fuel Economy Factory Ratios Increased Power
