Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 125/70-15 | 280/60-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.89 (556) | 31.23 (793.2) | 9.34 (237.2) 42.7% |
| Width inches (mm) | 4.92 (125) | 11.02 (280) | 6.1 (155) 124% |
| Circum. inches (mm) | 68.77 (1746.73) | 98.11 (2491.91) | 29.34 (745.19) 42.7% |
| Sidewall Height inches (mm) | 3.44 (87.5) | 6.61 (168) | 3.17 (80.5) 92% |
| Revolutions per mile (km) | 921.35 (572.5) | 645.83 (401.3) | -275.52 (-171.2) -29.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 28.53 mph (45.92 km/h) |
| 25 mph (40.23 km/h) | 35.67 mph (57.4 km/h) |
| 30 mph (48.28 km/h) | 42.8 mph (68.88 km/h) |
| 35 mph (56.33 km/h) | 49.93 mph (80.36 km/h) |
| 40 mph (64.37 km/h) | 57.06 mph (91.84 km/h) |
| 45 mph (72.42 km/h) | 64.2 mph (103.32 km/h) |
| 50 mph (80.47 km/h) | 71.33 mph (114.8 km/h) |
| 55 mph (88.51 km/h) | 78.46 mph (126.28 km/h) |
| 60 mph (96.56 km/h) | 85.6 mph (137.76 km/h) |
| 65 mph (104.61 km/h) | 92.73 mph (149.24 km/h) |
| 70 mph (112.65 km/h) | 99.86 mph (160.71 km/h) |
| 75 mph (120.7 km/h) | 107 mph (172.19 km/h) |
| 80 mph (128.75 km/h) | 114.13 mph (183.67 km/h) |
| 85 mph (136.79 km/h) | 121.26 mph (195.15 km/h) |
| 90 mph (144.84 km/h) | 128.4 mph (206.63 km/h) |
| 95 mph (152.89 km/h) | 135.53 mph (218.11 km/h) |
| 100 mph (160.93 km/h) | 142.66 mph (229.59 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1644 | 1909 | 2056 | 2147 | 2245 | 2315 | 2392 | 2483 | 2609 | 2735 | 2874 | 2986 | 3189 | 3413 | 3588 | 3700 | 3763 | 3993 | 4315 | 5014 |
Better Fuel Economy Factory Ratios Increased Power
