Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/80-16 | 30/9.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.54 (750.4) | 30.04 (763.08) | 0.5 (12.68) 1.7% |
| Width inches (mm) | 8.46 (215) | 9.49 (241) | 1.02 (26) 12.1% |
| Circum. inches (mm) | 92.81 (2357.45) | 94.38 (2397.29) | 1.57 (39.84) 1.7% |
| Sidewall Height inches (mm) | 6.77 (172) | 7.02 (178.34) | 0.25 (6.34) 3.7% |
| Revolutions per mile (km) | 682.66 (424.19) | 671.32 (417.14) | -11.34 (-7.05) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.34 mph (32.73 km/h) |
| 25 mph (40.23 km/h) | 25.42 mph (40.91 km/h) |
| 30 mph (48.28 km/h) | 30.51 mph (49.1 km/h) |
| 35 mph (56.33 km/h) | 35.59 mph (57.28 km/h) |
| 40 mph (64.37 km/h) | 40.68 mph (65.46 km/h) |
| 45 mph (72.42 km/h) | 45.76 mph (73.64 km/h) |
| 50 mph (80.47 km/h) | 50.84 mph (81.83 km/h) |
| 55 mph (88.51 km/h) | 55.93 mph (90.01 km/h) |
| 60 mph (96.56 km/h) | 61.01 mph (98.19 km/h) |
| 65 mph (104.61 km/h) | 66.1 mph (106.38 km/h) |
| 70 mph (112.65 km/h) | 71.18 mph (114.56 km/h) |
| 75 mph (120.7 km/h) | 76.27 mph (122.74 km/h) |
| 80 mph (128.75 km/h) | 81.35 mph (130.92 km/h) |
| 85 mph (136.79 km/h) | 86.44 mph (139.11 km/h) |
| 90 mph (144.84 km/h) | 91.52 mph (147.29 km/h) |
| 95 mph (152.89 km/h) | 96.61 mph (155.47 km/h) |
| 100 mph (160.93 km/h) | 101.69 mph (163.65 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1708 | 1985 | 2137 | 2232 | 2334 | 2406 | 2486 | 2581 | 2712 | 2842 | 2988 | 3104 | 3315 | 3548 | 3729 | 3846 | 3911 | 4151 | 4485 | 5212 |
Better Fuel Economy Factory Ratios Increased Power
