Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/80-12 | 155/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.76 (552.8) | 22.76 (578.2) | 1 (25.4) 4.6% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 68.37 (1736.67) | 71.51 (1816.47) | 3.14 (79.8) 4.6% |
| Sidewall Height inches (mm) | 4.88 (124) | 4.88 (124) | 0 (0) 0% |
| Revolutions per mile (km) | 926.68 (575.81) | 885.97 (550.52) | -40.71 (-25.3) -4.4% |
155/80-13 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.92 mph (33.67 km/h) |
| 25 mph (40.23 km/h) | 26.15 mph (42.08 km/h) |
| 30 mph (48.28 km/h) | 31.38 mph (50.5 km/h) |
| 35 mph (56.33 km/h) | 36.61 mph (58.92 km/h) |
| 40 mph (64.37 km/h) | 41.84 mph (67.33 km/h) |
| 45 mph (72.42 km/h) | 47.07 mph (75.75 km/h) |
| 50 mph (80.47 km/h) | 52.3 mph (84.16 km/h) |
| 55 mph (88.51 km/h) | 57.53 mph (92.58 km/h) |
| 60 mph (96.56 km/h) | 62.76 mph (101 km/h) |
| 65 mph (104.61 km/h) | 67.99 mph (109.41 km/h) |
| 70 mph (112.65 km/h) | 73.22 mph (117.83 km/h) |
| 75 mph (120.7 km/h) | 78.45 mph (126.25 km/h) |
| 80 mph (128.75 km/h) | 83.68 mph (134.66 km/h) |
| 85 mph (136.79 km/h) | 88.91 mph (143.08 km/h) |
| 90 mph (144.84 km/h) | 94.14 mph (151.5 km/h) |
| 95 mph (152.89 km/h) | 99.37 mph (159.91 km/h) |
| 100 mph (160.93 km/h) | 104.59 mph (168.33 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
