Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 195/50-13 | 155/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 20.68 (525.2) | 21.76 (552.8) | 1.09 (27.6) 5.3% |
| Width inches (mm) | 7.68 (195) | 6.1 (155) | -1.57 (-40) -20.5% |
| Circum. inches (mm) | 64.96 (1649.96) | 68.37 (1736.67) | 3.41 (86.71) 5.3% |
| Sidewall Height inches (mm) | 3.84 (97.5) | 4.88 (124) | 1.04 (26.5) 27.2% |
| Revolutions per mile (km) | 975.38 (606.07) | 926.68 (575.81) | -48.7 (-30.26) -5% |
155/80-12 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.05 mph (33.88 km/h) |
| 25 mph (40.23 km/h) | 26.31 mph (42.35 km/h) |
| 30 mph (48.28 km/h) | 31.58 mph (50.82 km/h) |
| 35 mph (56.33 km/h) | 36.84 mph (59.29 km/h) |
| 40 mph (64.37 km/h) | 42.1 mph (67.76 km/h) |
| 45 mph (72.42 km/h) | 47.36 mph (76.23 km/h) |
| 50 mph (80.47 km/h) | 52.63 mph (84.7 km/h) |
| 55 mph (88.51 km/h) | 57.89 mph (93.17 km/h) |
| 60 mph (96.56 km/h) | 63.15 mph (101.64 km/h) |
| 65 mph (104.61 km/h) | 68.42 mph (110.1 km/h) |
| 70 mph (112.65 km/h) | 73.68 mph (118.57 km/h) |
| 75 mph (120.7 km/h) | 78.94 mph (127.04 km/h) |
| 80 mph (128.75 km/h) | 84.2 mph (135.51 km/h) |
| 85 mph (136.79 km/h) | 89.47 mph (143.98 km/h) |
| 90 mph (144.84 km/h) | 94.73 mph (152.45 km/h) |
| 95 mph (152.89 km/h) | 99.99 mph (160.92 km/h) |
| 100 mph (160.93 km/h) | 105.26 mph (169.39 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
