Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/70-12 | 155/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.99 (507.8) | 22.76 (578.2) | 2.77 (70.4) 13.9% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 62.81 (1595.3) | 71.51 (1816.47) | 8.71 (221.17) 13.9% |
| Sidewall Height inches (mm) | 4 (101.5) | 4.88 (124) | 0.89 (22.5) 22.2% |
| Revolutions per mile (km) | 1008.8 (626.84) | 885.97 (550.52) | -122.83 (-76.32) -12.2% |
155/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.77 mph (36.65 km/h) |
| 25 mph (40.23 km/h) | 28.47 mph (45.81 km/h) |
| 30 mph (48.28 km/h) | 34.16 mph (54.97 km/h) |
| 35 mph (56.33 km/h) | 39.85 mph (64.14 km/h) |
| 40 mph (64.37 km/h) | 45.55 mph (73.3 km/h) |
| 45 mph (72.42 km/h) | 51.24 mph (82.46 km/h) |
| 50 mph (80.47 km/h) | 56.93 mph (91.62 km/h) |
| 55 mph (88.51 km/h) | 62.63 mph (100.79 km/h) |
| 60 mph (96.56 km/h) | 68.32 mph (109.95 km/h) |
| 65 mph (104.61 km/h) | 74.01 mph (119.11 km/h) |
| 70 mph (112.65 km/h) | 79.7 mph (128.27 km/h) |
| 75 mph (120.7 km/h) | 85.4 mph (137.43 km/h) |
| 80 mph (128.75 km/h) | 91.09 mph (146.6 km/h) |
| 85 mph (136.79 km/h) | 96.78 mph (155.76 km/h) |
| 90 mph (144.84 km/h) | 102.48 mph (164.92 km/h) |
| 95 mph (152.89 km/h) | 108.17 mph (174.08 km/h) |
| 100 mph (160.93 km/h) | 113.86 mph (183.25 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2255 | 2619 | 2821 | 2945 | 3080 | 3176 | 3281 | 3406 | 3579 | 3751 | 3943 | 4097 | 4375 | 4682 | 4922 | 5075 | 5162 | 5478 | 5920 | 6879 |
Better Fuel Economy Factory Ratios Increased Power
