Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/55-12 | 240/60-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 19.15 (486.3) | 23.34 (592.8) | 4.19 (106.5) 21.9% |
| Width inches (mm) | 6.5 (165) | 9.45 (240) | 2.95 (75) 45.5% |
| Circum. inches (mm) | 60.15 (1527.76) | 73.32 (1862.34) | 13.17 (334.58) 21.9% |
| Sidewall Height inches (mm) | 3.57 (90.75) | 5.67 (144) | 2.1 (53.25) 58.7% |
| Revolutions per mile (km) | 1053.4 (654.55) | 864.15 (536.96) | -189.25 (-117.59) -18% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.38 mph (39.24 km/h) |
| 25 mph (40.23 km/h) | 30.48 mph (49.04 km/h) |
| 30 mph (48.28 km/h) | 36.57 mph (58.85 km/h) |
| 35 mph (56.33 km/h) | 42.67 mph (68.66 km/h) |
| 40 mph (64.37 km/h) | 48.76 mph (78.47 km/h) |
| 45 mph (72.42 km/h) | 54.86 mph (88.28 km/h) |
| 50 mph (80.47 km/h) | 60.95 mph (98.09 km/h) |
| 55 mph (88.51 km/h) | 67.05 mph (107.9 km/h) |
| 60 mph (96.56 km/h) | 73.14 mph (117.71 km/h) |
| 65 mph (104.61 km/h) | 79.24 mph (127.52 km/h) |
| 70 mph (112.65 km/h) | 85.33 mph (137.33 km/h) |
| 75 mph (120.7 km/h) | 91.43 mph (147.13 km/h) |
| 80 mph (128.75 km/h) | 97.52 mph (156.94 km/h) |
| 85 mph (136.79 km/h) | 103.62 mph (166.75 km/h) |
| 90 mph (144.84 km/h) | 109.71 mph (176.56 km/h) |
| 95 mph (152.89 km/h) | 115.81 mph (186.37 km/h) |
| 100 mph (160.93 km/h) | 121.9 mph (196.18 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2199 | 2555 | 2751 | 2873 | 3004 | 3097 | 3200 | 3322 | 3490 | 3659 | 3846 | 3996 | 4267 | 4567 | 4801 | 4950 | 5035 | 5343 | 5774 | 6710 |
Better Fuel Economy Factory Ratios Increased Power
