Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 140/80-15 | 120/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.82 (605) | 24.56 (623.8) | 0.74 (18.8) 3.1% |
| Width inches (mm) | 5.51 (140) | 4.72 (120) | -0.79 (-20) -14.3% |
| Circum. inches (mm) | 74.83 (1900.66) | 77.15 (1959.73) | 2.33 (59.06) 3.1% |
| Sidewall Height inches (mm) | 4.41 (112) | 3.78 (96) | -0.63 (-16) -14.3% |
| Revolutions per mile (km) | 846.73 (526.13) | 821.21 (510.27) | -25.52 (-15.86) -3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.62 mph (33.19 km/h) |
| 25 mph (40.23 km/h) | 25.78 mph (41.48 km/h) |
| 30 mph (48.28 km/h) | 30.93 mph (49.78 km/h) |
| 35 mph (56.33 km/h) | 36.09 mph (58.08 km/h) |
| 40 mph (64.37 km/h) | 41.24 mph (66.37 km/h) |
| 45 mph (72.42 km/h) | 46.4 mph (74.67 km/h) |
| 50 mph (80.47 km/h) | 51.55 mph (82.97 km/h) |
| 55 mph (88.51 km/h) | 56.71 mph (91.26 km/h) |
| 60 mph (96.56 km/h) | 61.86 mph (99.56 km/h) |
| 65 mph (104.61 km/h) | 67.02 mph (107.86 km/h) |
| 70 mph (112.65 km/h) | 72.18 mph (116.15 km/h) |
| 75 mph (120.7 km/h) | 77.33 mph (124.45 km/h) |
| 80 mph (128.75 km/h) | 82.49 mph (132.75 km/h) |
| 85 mph (136.79 km/h) | 87.64 mph (141.05 km/h) |
| 90 mph (144.84 km/h) | 92.8 mph (149.34 km/h) |
| 95 mph (152.89 km/h) | 97.95 mph (157.64 km/h) |
| 100 mph (160.93 km/h) | 103.11 mph (165.94 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
