Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 205/75-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 24.11 (612.3) | 2.46 (62.5) 11.4% |
| Width inches (mm) | 6.89 (175) | 8.07 (205) | 1.18 (30) 17.1% |
| Circum. inches (mm) | 68 (1727.25) | 75.73 (1923.6) | 7.73 (196.35) 11.4% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 6.05 (153.75) | 1.23 (31.25) 25.5% |
| Revolutions per mile (km) | 931.74 (578.95) | 836.63 (519.86) | -95.11 (-59.1) -10.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.27 mph (35.85 km/h) |
| 25 mph (40.23 km/h) | 27.84 mph (44.81 km/h) |
| 30 mph (48.28 km/h) | 33.41 mph (53.77 km/h) |
| 35 mph (56.33 km/h) | 38.98 mph (62.73 km/h) |
| 40 mph (64.37 km/h) | 44.55 mph (71.69 km/h) |
| 45 mph (72.42 km/h) | 50.12 mph (80.65 km/h) |
| 50 mph (80.47 km/h) | 55.68 mph (89.61 km/h) |
| 55 mph (88.51 km/h) | 61.25 mph (98.58 km/h) |
| 60 mph (96.56 km/h) | 66.82 mph (107.54 km/h) |
| 65 mph (104.61 km/h) | 72.39 mph (116.5 km/h) |
| 70 mph (112.65 km/h) | 77.96 mph (125.46 km/h) |
| 75 mph (120.7 km/h) | 83.53 mph (134.42 km/h) |
| 80 mph (128.75 km/h) | 89.09 mph (143.38 km/h) |
| 85 mph (136.79 km/h) | 94.66 mph (152.34 km/h) |
| 90 mph (144.84 km/h) | 100.23 mph (161.31 km/h) |
| 95 mph (152.89 km/h) | 105.8 mph (170.27 km/h) |
| 100 mph (160.93 km/h) | 111.37 mph (179.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2129 | 2473 | 2664 | 2781 | 2908 | 2999 | 3098 | 3216 | 3379 | 3542 | 3724 | 3869 | 4131 | 4421 | 4648 | 4793 | 4874 | 5173 | 5590 | 6496 |
Better Fuel Economy Factory Ratios Increased Power
