Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/7.5-15 | 185/75-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (636.94) | 25.93 (658.5) | 0.85 (21.56) 3.4% |
| Width inches (mm) | 7.52 (191) | 7.28 (185) | -0.24 (-6) -3.1% |
| Circum. inches (mm) | 78.78 (2001.01) | 81.45 (2068.74) | 2.67 (67.73) 3.4% |
| Sidewall Height inches (mm) | 5.04 (127.97) | 5.46 (138.75) | 0.42 (10.78) 8.4% |
| Revolutions per mile (km) | 804.27 (499.75) | 777.93 (483.39) | -26.33 (-16.36) -3.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.68 mph (33.28 km/h) |
| 25 mph (40.23 km/h) | 25.85 mph (41.6 km/h) |
| 30 mph (48.28 km/h) | 31.02 mph (49.91 km/h) |
| 35 mph (56.33 km/h) | 36.18 mph (58.23 km/h) |
| 40 mph (64.37 km/h) | 41.35 mph (66.55 km/h) |
| 45 mph (72.42 km/h) | 46.52 mph (74.87 km/h) |
| 50 mph (80.47 km/h) | 51.69 mph (83.19 km/h) |
| 55 mph (88.51 km/h) | 56.86 mph (91.51 km/h) |
| 60 mph (96.56 km/h) | 62.03 mph (99.83 km/h) |
| 65 mph (104.61 km/h) | 67.2 mph (108.15 km/h) |
| 70 mph (112.65 km/h) | 72.37 mph (116.47 km/h) |
| 75 mph (120.7 km/h) | 77.54 mph (124.79 km/h) |
| 80 mph (128.75 km/h) | 82.71 mph (133.11 km/h) |
| 85 mph (136.79 km/h) | 87.88 mph (141.42 km/h) |
| 90 mph (144.84 km/h) | 93.05 mph (149.74 km/h) |
| 95 mph (152.89 km/h) | 98.22 mph (158.06 km/h) |
| 100 mph (160.93 km/h) | 103.38 mph (166.38 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1980 | 2300 | 2477 | 2586 | 2704 | 2788 | 2881 | 2991 | 3142 | 3294 | 3462 | 3597 | 3841 | 4111 | 4322 | 4456 | 4532 | 4810 | 5198 | 6040 |
Better Fuel Economy Factory Ratios Increased Power
