Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/70-12 | 195/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.65 (549.8) | 24.28 (616.8) | 2.64 (67) 12.2% |
| Width inches (mm) | 6.89 (175) | 7.68 (195) | 0.79 (20) 11.4% |
| Circum. inches (mm) | 68 (1727.25) | 76.29 (1937.73) | 8.29 (210.49) 12.2% |
| Sidewall Height inches (mm) | 4.82 (122.5) | 6.14 (156) | 1.32 (33.5) 27.3% |
| Revolutions per mile (km) | 931.74 (578.95) | 830.53 (516.07) | -101.21 (-62.89) -10.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.44 mph (36.11 km/h) |
| 25 mph (40.23 km/h) | 28.05 mph (45.14 km/h) |
| 30 mph (48.28 km/h) | 33.66 mph (54.16 km/h) |
| 35 mph (56.33 km/h) | 39.27 mph (63.19 km/h) |
| 40 mph (64.37 km/h) | 44.87 mph (72.22 km/h) |
| 45 mph (72.42 km/h) | 50.48 mph (81.25 km/h) |
| 50 mph (80.47 km/h) | 56.09 mph (90.27 km/h) |
| 55 mph (88.51 km/h) | 61.7 mph (99.3 km/h) |
| 60 mph (96.56 km/h) | 67.31 mph (108.33 km/h) |
| 65 mph (104.61 km/h) | 72.92 mph (117.36 km/h) |
| 70 mph (112.65 km/h) | 78.53 mph (126.38 km/h) |
| 75 mph (120.7 km/h) | 84.14 mph (135.41 km/h) |
| 80 mph (128.75 km/h) | 89.75 mph (144.44 km/h) |
| 85 mph (136.79 km/h) | 95.36 mph (153.46 km/h) |
| 90 mph (144.84 km/h) | 100.97 mph (162.49 km/h) |
| 95 mph (152.89 km/h) | 106.58 mph (171.52 km/h) |
| 100 mph (160.93 km/h) | 112.19 mph (180.55 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2114 | 2455 | 2644 | 2761 | 2887 | 2977 | 3076 | 3193 | 3355 | 3517 | 3696 | 3840 | 4101 | 4389 | 4614 | 4758 | 4839 | 5135 | 5549 | 6449 |
Better Fuel Economy Factory Ratios Increased Power
