Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-17 | 155/80-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.13 (663.8) | 26.76 (679.8) | 0.63 (16) 2.4% |
| Width inches (mm) | 5.71 (145) | 6.1 (155) | 0.39 (10) 6.9% |
| Circum. inches (mm) | 82.1 (2085.39) | 84.08 (2135.65) | 1.98 (50.27) 2.4% |
| Sidewall Height inches (mm) | 4.57 (116) | 4.88 (124) | 0.31 (8) 6.9% |
| Revolutions per mile (km) | 771.72 (479.53) | 753.56 (468.24) | -18.16 (-11.29) -2.4% |
155/80-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.48 mph (32.96 km/h) |
| 25 mph (40.23 km/h) | 25.6 mph (41.2 km/h) |
| 30 mph (48.28 km/h) | 30.72 mph (49.44 km/h) |
| 35 mph (56.33 km/h) | 35.84 mph (57.68 km/h) |
| 40 mph (64.37 km/h) | 40.96 mph (65.93 km/h) |
| 45 mph (72.42 km/h) | 46.08 mph (74.17 km/h) |
| 50 mph (80.47 km/h) | 51.21 mph (82.41 km/h) |
| 55 mph (88.51 km/h) | 56.33 mph (90.65 km/h) |
| 60 mph (96.56 km/h) | 61.45 mph (98.89 km/h) |
| 65 mph (104.61 km/h) | 66.57 mph (107.13 km/h) |
| 70 mph (112.65 km/h) | 71.69 mph (115.37 km/h) |
| 75 mph (120.7 km/h) | 76.81 mph (123.61 km/h) |
| 80 mph (128.75 km/h) | 81.93 mph (131.85 km/h) |
| 85 mph (136.79 km/h) | 87.05 mph (140.09 km/h) |
| 90 mph (144.84 km/h) | 92.17 mph (148.33 km/h) |
| 95 mph (152.89 km/h) | 97.29 mph (156.57 km/h) |
| 100 mph (160.93 km/h) | 102.41 mph (164.81 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1918 | 2228 | 2399 | 2505 | 2619 | 2701 | 2791 | 2897 | 3044 | 3191 | 3354 | 3484 | 3721 | 3982 | 4186 | 4317 | 4390 | 4660 | 5035 | 5851 |
Better Fuel Economy Factory Ratios Increased Power
