Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 195/40-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 18.14 (460.8) | -3.5 (-89) -16.2% |
| Width inches (mm) | 6.89 (175) | 7.68 (195) | 0.79 (20) 11.4% |
| Circum. inches (mm) | 68 (1727.25) | 56.99 (1447.65) | -11.01 (-279.6) -16.2% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 3.07 (78) | -1.75 (-44.5) -36.3% |
| Revolutions per mile (km) | 931.74 (578.95) | 1111.7 (690.78) | 179.96 (111.82) 19.3% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.76 mph (26.98 km/h) |
| 25 mph (40.23 km/h) | 20.95 mph (33.72 km/h) |
| 30 mph (48.28 km/h) | 25.14 mph (40.46 km/h) |
| 35 mph (56.33 km/h) | 29.33 mph (47.21 km/h) |
| 40 mph (64.37 km/h) | 33.52 mph (53.95 km/h) |
| 45 mph (72.42 km/h) | 37.72 mph (60.7 km/h) |
| 50 mph (80.47 km/h) | 41.91 mph (67.44 km/h) |
| 55 mph (88.51 km/h) | 46.1 mph (74.19 km/h) |
| 60 mph (96.56 km/h) | 50.29 mph (80.93 km/h) |
| 65 mph (104.61 km/h) | 54.48 mph (87.67 km/h) |
| 70 mph (112.65 km/h) | 58.67 mph (94.42 km/h) |
| 75 mph (120.7 km/h) | 62.86 mph (101.16 km/h) |
| 80 mph (128.75 km/h) | 67.05 mph (107.91 km/h) |
| 85 mph (136.79 km/h) | 71.24 mph (114.65 km/h) |
| 90 mph (144.84 km/h) | 75.43 mph (121.39 km/h) |
| 95 mph (152.89 km/h) | 79.62 mph (128.14 km/h) |
| 100 mph (160.93 km/h) | 83.81 mph (134.88 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
