Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 160/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 27.45 (697.2) | 6.94 (176.4) 33.9% |
| Width inches (mm) | 5.31 (135) | 6.3 (160) | 0.98 (25) 18.5% |
| Circum. inches (mm) | 64.42 (1636.14) | 86.23 (2190.32) | 21.82 (554.18) 33.9% |
| Sidewall Height inches (mm) | 4.25 (108) | 4.72 (120) | 0.47 (12) 11.1% |
| Revolutions per mile (km) | 983.62 (611.19) | 734.75 (456.55) | -248.87 (-154.64) -25.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.77 mph (43.09 km/h) |
| 25 mph (40.23 km/h) | 33.47 mph (53.86 km/h) |
| 30 mph (48.28 km/h) | 40.16 mph (64.63 km/h) |
| 35 mph (56.33 km/h) | 46.85 mph (75.41 km/h) |
| 40 mph (64.37 km/h) | 53.55 mph (86.18 km/h) |
| 45 mph (72.42 km/h) | 60.24 mph (96.95 km/h) |
| 50 mph (80.47 km/h) | 66.94 mph (107.72 km/h) |
| 55 mph (88.51 km/h) | 73.63 mph (118.49 km/h) |
| 60 mph (96.56 km/h) | 80.32 mph (129.27 km/h) |
| 65 mph (104.61 km/h) | 87.02 mph (140.04 km/h) |
| 70 mph (112.65 km/h) | 93.71 mph (150.81 km/h) |
| 75 mph (120.7 km/h) | 100.4 mph (161.58 km/h) |
| 80 mph (128.75 km/h) | 107.1 mph (172.36 km/h) |
| 85 mph (136.79 km/h) | 113.79 mph (183.13 km/h) |
| 90 mph (144.84 km/h) | 120.48 mph (193.9 km/h) |
| 95 mph (152.89 km/h) | 127.18 mph (204.67 km/h) |
| 100 mph (160.93 km/h) | 133.87 mph (215.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1870 | 2172 | 2339 | 2443 | 2554 | 2634 | 2721 | 2825 | 2968 | 3111 | 3270 | 3397 | 3628 | 3883 | 4082 | 4209 | 4281 | 4543 | 4909 | 5705 |
Better Fuel Economy Factory Ratios Increased Power
