Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/90-18 | 155/80-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.98 (736.2) | 28.76 (730.6) | -0.22 (-5.6) -0.8% |
| Width inches (mm) | 6.1 (155) | 6.1 (155) | 0 (0) 0% |
| Circum. inches (mm) | 91.06 (2312.84) | 90.36 (2295.25) | -0.69 (-17.59) -0.8% |
| Sidewall Height inches (mm) | 5.49 (139.5) | 4.88 (124) | -0.61 (-15.5) -11.1% |
| Revolutions per mile (km) | 695.83 (432.37) | 701.16 (435.68) | 5.33 (3.31) 0.8% |
155/80-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.85 mph (31.94 km/h) |
| 25 mph (40.23 km/h) | 24.81 mph (39.93 km/h) |
| 30 mph (48.28 km/h) | 29.77 mph (47.91 km/h) |
| 35 mph (56.33 km/h) | 34.73 mph (55.9 km/h) |
| 40 mph (64.37 km/h) | 39.7 mph (63.88 km/h) |
| 45 mph (72.42 km/h) | 44.66 mph (71.87 km/h) |
| 50 mph (80.47 km/h) | 49.62 mph (79.86 km/h) |
| 55 mph (88.51 km/h) | 54.58 mph (87.84 km/h) |
| 60 mph (96.56 km/h) | 59.54 mph (95.83 km/h) |
| 65 mph (104.61 km/h) | 64.51 mph (103.81 km/h) |
| 70 mph (112.65 km/h) | 69.47 mph (111.8 km/h) |
| 75 mph (120.7 km/h) | 74.43 mph (119.78 km/h) |
| 80 mph (128.75 km/h) | 79.39 mph (127.77 km/h) |
| 85 mph (136.79 km/h) | 84.35 mph (135.75 km/h) |
| 90 mph (144.84 km/h) | 89.32 mph (143.74 km/h) |
| 95 mph (152.89 km/h) | 94.28 mph (151.73 km/h) |
| 100 mph (160.93 km/h) | 99.24 mph (159.71 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1784 | 2073 | 2232 | 2331 | 2437 | 2513 | 2597 | 2695 | 2832 | 2969 | 3121 | 3242 | 3462 | 3705 | 3895 | 4017 | 4085 | 4336 | 4685 | 5444 |
Better Fuel Economy Factory Ratios Increased Power
