Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/70-12 | 205/50-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.54 (521.8) | 20.07 (509.8) | -0.47 (-12) -2.3% |
| Width inches (mm) | 6.1 (155) | 8.07 (205) | 1.97 (50) 32.3% |
| Circum. inches (mm) | 64.54 (1639.28) | 63.05 (1601.58) | -1.48 (-37.7) -2.3% |
| Sidewall Height inches (mm) | 4.27 (108.5) | 4.04 (102.5) | -0.24 (-6) -5.5% |
| Revolutions per mile (km) | 981.74 (610.02) | 1004.85 (624.38) | 23.11 (14.36) 2.4% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.54 mph (31.45 km/h) |
| 25 mph (40.23 km/h) | 24.43 mph (39.31 km/h) |
| 30 mph (48.28 km/h) | 29.31 mph (47.17 km/h) |
| 35 mph (56.33 km/h) | 34.2 mph (55.03 km/h) |
| 40 mph (64.37 km/h) | 39.08 mph (62.89 km/h) |
| 45 mph (72.42 km/h) | 43.97 mph (70.76 km/h) |
| 50 mph (80.47 km/h) | 48.85 mph (78.62 km/h) |
| 55 mph (88.51 km/h) | 53.74 mph (86.48 km/h) |
| 60 mph (96.56 km/h) | 58.62 mph (94.34 km/h) |
| 65 mph (104.61 km/h) | 63.51 mph (102.2 km/h) |
| 70 mph (112.65 km/h) | 68.39 mph (110.06 km/h) |
| 75 mph (120.7 km/h) | 73.28 mph (117.93 km/h) |
| 80 mph (128.75 km/h) | 78.16 mph (125.79 km/h) |
| 85 mph (136.79 km/h) | 83.05 mph (133.65 km/h) |
| 90 mph (144.84 km/h) | 87.93 mph (141.51 km/h) |
| 95 mph (152.89 km/h) | 92.82 mph (149.37 km/h) |
| 100 mph (160.93 km/h) | 97.7 mph (157.23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Better Fuel Economy Factory Ratios Increased Power
