Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 175/85-16 | 230/80-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.71 (703.9) | 26.49 (672.8) | -1.22 (-31.1) -4.4% |
| Width inches (mm) | 6.89 (175) | 9.06 (230) | 2.17 (55) 31.4% |
| Circum. inches (mm) | 87.06 (2211.37) | 83.22 (2113.66) | -3.85 (-97.7) -4.4% |
| Sidewall Height inches (mm) | 5.86 (148.75) | 7.24 (184) | 1.39 (35.25) 23.7% |
| Revolutions per mile (km) | 727.76 (452.21) | 761.4 (473.11) | 33.64 (20.9) 4.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.12 mph (30.76 km/h) |
| 25 mph (40.23 km/h) | 23.9 mph (38.46 km/h) |
| 30 mph (48.28 km/h) | 28.67 mph (46.15 km/h) |
| 35 mph (56.33 km/h) | 33.45 mph (53.84 km/h) |
| 40 mph (64.37 km/h) | 38.23 mph (61.53 km/h) |
| 45 mph (72.42 km/h) | 43.01 mph (69.22 km/h) |
| 50 mph (80.47 km/h) | 47.79 mph (76.91 km/h) |
| 55 mph (88.51 km/h) | 52.57 mph (84.6 km/h) |
| 60 mph (96.56 km/h) | 57.35 mph (92.29 km/h) |
| 65 mph (104.61 km/h) | 62.13 mph (99.99 km/h) |
| 70 mph (112.65 km/h) | 66.91 mph (107.68 km/h) |
| 75 mph (120.7 km/h) | 71.69 mph (115.37 km/h) |
| 80 mph (128.75 km/h) | 76.47 mph (123.06 km/h) |
| 85 mph (136.79 km/h) | 81.24 mph (130.75 km/h) |
| 90 mph (144.84 km/h) | 86.02 mph (138.44 km/h) |
| 95 mph (152.89 km/h) | 90.8 mph (146.13 km/h) |
| 100 mph (160.93 km/h) | 95.58 mph (153.82 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1938 | 2251 | 2424 | 2531 | 2647 | 2729 | 2820 | 2927 | 3075 | 3224 | 3389 | 3521 | 3760 | 4024 | 4230 | 4362 | 4436 | 4708 | 5087 | 5912 |
Better Fuel Economy Factory Ratios Increased Power
