Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 135/80-12 | 165/55-14 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.5 (520.8) | 21.15 (537.1) | 0.64 (16.3) 3.1% |
| Width inches (mm) | 5.31 (135) | 6.5 (165) | 1.18 (30) 22.2% |
| Circum. inches (mm) | 64.42 (1636.14) | 66.43 (1687.35) | 2.02 (51.21) 3.1% |
| Sidewall Height inches (mm) | 4.25 (108) | 3.57 (90.75) | -0.68 (-17.25) -16% |
| Revolutions per mile (km) | 983.62 (611.19) | 953.77 (592.64) | -29.85 (-18.55) -3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.63 mph (33.19 km/h) |
| 25 mph (40.23 km/h) | 25.78 mph (41.49 km/h) |
| 30 mph (48.28 km/h) | 30.94 mph (49.79 km/h) |
| 35 mph (56.33 km/h) | 36.1 mph (58.09 km/h) |
| 40 mph (64.37 km/h) | 41.25 mph (66.39 km/h) |
| 45 mph (72.42 km/h) | 46.41 mph (74.69 km/h) |
| 50 mph (80.47 km/h) | 51.56 mph (82.99 km/h) |
| 55 mph (88.51 km/h) | 56.72 mph (91.28 km/h) |
| 60 mph (96.56 km/h) | 61.88 mph (99.58 km/h) |
| 65 mph (104.61 km/h) | 67.03 mph (107.88 km/h) |
| 70 mph (112.65 km/h) | 72.19 mph (116.18 km/h) |
| 75 mph (120.7 km/h) | 77.35 mph (124.48 km/h) |
| 80 mph (128.75 km/h) | 82.5 mph (132.78 km/h) |
| 85 mph (136.79 km/h) | 87.66 mph (141.08 km/h) |
| 90 mph (144.84 km/h) | 92.82 mph (149.37 km/h) |
| 95 mph (152.89 km/h) | 97.97 mph (157.67 km/h) |
| 100 mph (160.93 km/h) | 103.13 mph (165.97 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
