Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/70-15 | 27/12.5-12 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.85 (682) | 27.02 (686.4) | 0.17 (4.4) 0.6% |
| Width inches (mm) | 8.46 (215) | 12.52 (318) | 4.06 (103) 47.9% |
| Circum. inches (mm) | 84.35 (2142.57) | 84.9 (2156.39) | 0.54 (13.82) 0.6% |
| Sidewall Height inches (mm) | 5.93 (150.5) | 7.51 (190.8) | 1.59 (40.3) 26.8% |
| Revolutions per mile (km) | 751.13 (466.73) | 746.31 (463.74) | -4.81 (-2.99) -0.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.13 mph (32.39 km/h) |
| 25 mph (40.23 km/h) | 25.16 mph (40.49 km/h) |
| 30 mph (48.28 km/h) | 30.19 mph (48.59 km/h) |
| 35 mph (56.33 km/h) | 35.23 mph (56.69 km/h) |
| 40 mph (64.37 km/h) | 40.26 mph (64.79 km/h) |
| 45 mph (72.42 km/h) | 45.29 mph (72.89 km/h) |
| 50 mph (80.47 km/h) | 50.32 mph (80.99 km/h) |
| 55 mph (88.51 km/h) | 55.35 mph (89.09 km/h) |
| 60 mph (96.56 km/h) | 60.39 mph (97.18 km/h) |
| 65 mph (104.61 km/h) | 65.42 mph (105.28 km/h) |
| 70 mph (112.65 km/h) | 70.45 mph (113.38 km/h) |
| 75 mph (120.7 km/h) | 75.48 mph (121.48 km/h) |
| 80 mph (128.75 km/h) | 80.52 mph (129.58 km/h) |
| 85 mph (136.79 km/h) | 85.55 mph (137.68 km/h) |
| 90 mph (144.84 km/h) | 90.58 mph (145.78 km/h) |
| 95 mph (152.89 km/h) | 95.61 mph (153.87 km/h) |
| 100 mph (160.93 km/h) | 100.65 mph (161.97 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1899 | 2206 | 2376 | 2481 | 2594 | 2675 | 2764 | 2869 | 3015 | 3160 | 3322 | 3451 | 3685 | 3944 | 4146 | 4275 | 4348 | 4615 | 4986 | 5795 |
Better Fuel Economy Factory Ratios Increased Power
