Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 205/80-12 | 28/8-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 24.91 (632.8) | 27.98 (710.8) | 3.07 (78) 12.3% |
| Width inches (mm) | 8.07 (205) | 7.99 (203) | -0.08 (-2) -1% |
| Circum. inches (mm) | 78.27 (1988) | 87.92 (2233.04) | 9.65 (245.04) 12.3% |
| Sidewall Height inches (mm) | 6.46 (164) | 7.99 (203) | 1.54 (39) 23.8% |
| Revolutions per mile (km) | 809.53 (503.02) | 720.7 (447.82) | -88.83 (-55.2) -11% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.47 mph (36.15 km/h) |
| 25 mph (40.23 km/h) | 28.08 mph (45.19 km/h) |
| 30 mph (48.28 km/h) | 33.7 mph (54.23 km/h) |
| 35 mph (56.33 km/h) | 39.31 mph (63.27 km/h) |
| 40 mph (64.37 km/h) | 44.93 mph (72.31 km/h) |
| 45 mph (72.42 km/h) | 50.55 mph (81.35 km/h) |
| 50 mph (80.47 km/h) | 56.16 mph (90.39 km/h) |
| 55 mph (88.51 km/h) | 61.78 mph (99.42 km/h) |
| 60 mph (96.56 km/h) | 67.4 mph (108.46 km/h) |
| 65 mph (104.61 km/h) | 73.01 mph (117.5 km/h) |
| 70 mph (112.65 km/h) | 78.63 mph (126.54 km/h) |
| 75 mph (120.7 km/h) | 84.24 mph (135.58 km/h) |
| 80 mph (128.75 km/h) | 89.86 mph (144.62 km/h) |
| 85 mph (136.79 km/h) | 95.48 mph (153.66 km/h) |
| 90 mph (144.84 km/h) | 101.09 mph (162.69 km/h) |
| 95 mph (152.89 km/h) | 106.71 mph (171.73 km/h) |
| 100 mph (160.93 km/h) | 112.33 mph (180.77 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1834 | 2131 | 2294 | 2396 | 2505 | 2583 | 2669 | 2771 | 2911 | 3052 | 3208 | 3332 | 3559 | 3809 | 4004 | 4129 | 4199 | 4456 | 4815 | 5596 |
Better Fuel Economy Factory Ratios Increased Power
