Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 25/7.5-15 | 165/85-15 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.08 (636.94) | 26.04 (661.5) | 0.97 (24.56) 3.9% |
| Width inches (mm) | 7.52 (191) | 6.5 (165) | -1.02 (-26) -13.6% |
| Circum. inches (mm) | 78.78 (2001.01) | 81.82 (2078.16) | 3.04 (77.16) 3.9% |
| Sidewall Height inches (mm) | 5.04 (127.97) | 5.52 (140.25) | 0.48 (12.28) 9.6% |
| Revolutions per mile (km) | 804.27 (499.75) | 774.41 (481.19) | -29.86 (-18.55) -3.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.77 mph (33.43 km/h) |
| 25 mph (40.23 km/h) | 25.96 mph (41.79 km/h) |
| 30 mph (48.28 km/h) | 31.16 mph (50.14 km/h) |
| 35 mph (56.33 km/h) | 36.35 mph (58.5 km/h) |
| 40 mph (64.37 km/h) | 41.54 mph (66.86 km/h) |
| 45 mph (72.42 km/h) | 46.74 mph (75.21 km/h) |
| 50 mph (80.47 km/h) | 51.93 mph (83.57 km/h) |
| 55 mph (88.51 km/h) | 57.12 mph (91.93 km/h) |
| 60 mph (96.56 km/h) | 62.31 mph (100.28 km/h) |
| 65 mph (104.61 km/h) | 67.51 mph (108.64 km/h) |
| 70 mph (112.65 km/h) | 72.7 mph (117 km/h) |
| 75 mph (120.7 km/h) | 77.89 mph (125.36 km/h) |
| 80 mph (128.75 km/h) | 83.08 mph (133.71 km/h) |
| 85 mph (136.79 km/h) | 88.28 mph (142.07 km/h) |
| 90 mph (144.84 km/h) | 93.47 mph (150.43 km/h) |
| 95 mph (152.89 km/h) | 98.66 mph (158.78 km/h) |
| 100 mph (160.93 km/h) | 103.86 mph (167.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1971 | 2289 | 2465 | 2575 | 2692 | 2776 | 2868 | 2977 | 3128 | 3279 | 3447 | 3581 | 3824 | 4092 | 4302 | 4436 | 4512 | 4788 | 5174 | 6013 |
Better Fuel Economy Factory Ratios Increased Power
