Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/85-18 | 155/80-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.7 (703.7) | 28.76 (730.6) | 1.06 (26.9) 3.8% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 87.04 (2210.74) | 90.36 (2295.25) | 3.33 (84.51) 3.8% |
| Sidewall Height inches (mm) | 4.85 (123.25) | 4.88 (124) | 0.03 (0.75) 0.6% |
| Revolutions per mile (km) | 727.97 (452.34) | 701.16 (435.68) | -26.8 (-16.65) -3.7% |
155/80-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.76 mph (33.42 km/h) |
| 25 mph (40.23 km/h) | 25.96 mph (41.77 km/h) |
| 30 mph (48.28 km/h) | 31.15 mph (50.13 km/h) |
| 35 mph (56.33 km/h) | 36.34 mph (58.48 km/h) |
| 40 mph (64.37 km/h) | 41.53 mph (66.83 km/h) |
| 45 mph (72.42 km/h) | 46.72 mph (75.19 km/h) |
| 50 mph (80.47 km/h) | 51.91 mph (83.54 km/h) |
| 55 mph (88.51 km/h) | 57.1 mph (91.9 km/h) |
| 60 mph (96.56 km/h) | 62.29 mph (100.25 km/h) |
| 65 mph (104.61 km/h) | 67.48 mph (108.61 km/h) |
| 70 mph (112.65 km/h) | 72.68 mph (116.96 km/h) |
| 75 mph (120.7 km/h) | 77.87 mph (125.32 km/h) |
| 80 mph (128.75 km/h) | 83.06 mph (133.67 km/h) |
| 85 mph (136.79 km/h) | 88.25 mph (142.02 km/h) |
| 90 mph (144.84 km/h) | 93.44 mph (150.38 km/h) |
| 95 mph (152.89 km/h) | 98.63 mph (158.73 km/h) |
| 100 mph (160.93 km/h) | 103.82 mph (167.09 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
