Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 145/80-13 | 165/80-13 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 22.13 (562.2) | 23.39 (594.2) | 1.26 (32) 5.7% |
| Width inches (mm) | 5.71 (145) | 6.5 (165) | 0.79 (20) 13.8% |
| Circum. inches (mm) | 69.54 (1766.2) | 73.49 (1866.73) | 3.96 (100.53) 5.7% |
| Sidewall Height inches (mm) | 4.57 (116) | 5.2 (132) | 0.63 (16) 13.8% |
| Revolutions per mile (km) | 911.19 (566.19) | 862.12 (535.69) | -49.07 (-30.49) -5.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.14 mph (34.02 km/h) |
| 25 mph (40.23 km/h) | 26.42 mph (42.52 km/h) |
| 30 mph (48.28 km/h) | 31.71 mph (51.03 km/h) |
| 35 mph (56.33 km/h) | 36.99 mph (59.53 km/h) |
| 40 mph (64.37 km/h) | 42.28 mph (68.04 km/h) |
| 45 mph (72.42 km/h) | 47.56 mph (76.54 km/h) |
| 50 mph (80.47 km/h) | 52.85 mph (85.05 km/h) |
| 55 mph (88.51 km/h) | 58.13 mph (93.55 km/h) |
| 60 mph (96.56 km/h) | 63.42 mph (102.06 km/h) |
| 65 mph (104.61 km/h) | 68.7 mph (110.56 km/h) |
| 70 mph (112.65 km/h) | 73.98 mph (119.07 km/h) |
| 75 mph (120.7 km/h) | 79.27 mph (127.57 km/h) |
| 80 mph (128.75 km/h) | 84.55 mph (136.08 km/h) |
| 85 mph (136.79 km/h) | 89.84 mph (144.58 km/h) |
| 90 mph (144.84 km/h) | 95.12 mph (153.09 km/h) |
| 95 mph (152.89 km/h) | 100.41 mph (161.59 km/h) |
| 100 mph (160.93 km/h) | 105.69 mph (170.09 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2194 | 2549 | 2745 | 2866 | 2997 | 3090 | 3193 | 3314 | 3482 | 3650 | 3837 | 3986 | 4257 | 4556 | 4789 | 4939 | 5023 | 5331 | 5760 | 6694 |
Better Fuel Economy Factory Ratios Increased Power
