Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 155/60-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 20.32 (516.2) | -0.18 (-4.6) -0.9% |
| Width inches (mm) | 5.31 (135) | 6.1 (155) | 0.79 (20) 14.8% |
| Circum. inches (mm) | 64.42 (1636.14) | 63.85 (1621.69) | -0.57 (-14.45) -0.9% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.66 (93) | -0.59 (-15) -13.9% |
| Revolutions per mile (km) | 983.62 (611.19) | 992.39 (616.64) | 8.77 (5.45) 0.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.82 mph (31.9 km/h) |
| 25 mph (40.23 km/h) | 24.78 mph (39.88 km/h) |
| 30 mph (48.28 km/h) | 29.74 mph (47.85 km/h) |
| 35 mph (56.33 km/h) | 34.69 mph (55.83 km/h) |
| 40 mph (64.37 km/h) | 39.65 mph (63.81 km/h) |
| 45 mph (72.42 km/h) | 44.6 mph (71.78 km/h) |
| 50 mph (80.47 km/h) | 49.56 mph (79.76 km/h) |
| 55 mph (88.51 km/h) | 54.51 mph (87.73 km/h) |
| 60 mph (96.56 km/h) | 59.47 mph (95.71 km/h) |
| 65 mph (104.61 km/h) | 64.43 mph (103.68 km/h) |
| 70 mph (112.65 km/h) | 69.38 mph (111.66 km/h) |
| 75 mph (120.7 km/h) | 74.34 mph (119.63 km/h) |
| 80 mph (128.75 km/h) | 79.29 mph (127.61 km/h) |
| 85 mph (136.79 km/h) | 84.25 mph (135.59 km/h) |
| 90 mph (144.84 km/h) | 89.21 mph (143.56 km/h) |
| 95 mph (152.89 km/h) | 94.16 mph (151.54 km/h) |
| 100 mph (160.93 km/h) | 99.12 mph (159.51 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
