Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 215/80-16 | 30/7.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.54 (750.4) | 29.99 (761.66) | 0.44 (11.26) 1.5% |
| Width inches (mm) | 8.46 (215) | 7.52 (191) | -0.94 (-24) -11.2% |
| Circum. inches (mm) | 92.81 (2357.45) | 94.21 (2392.83) | 1.39 (35.37) 1.5% |
| Sidewall Height inches (mm) | 6.77 (172) | 6.99 (177.63) | 0.22 (5.63) 3.3% |
| Revolutions per mile (km) | 682.66 (424.19) | 672.57 (417.92) | -10.09 (-6.27) -1.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.3 mph (32.67 km/h) |
| 25 mph (40.23 km/h) | 25.38 mph (40.84 km/h) |
| 30 mph (48.28 km/h) | 30.45 mph (49 km/h) |
| 35 mph (56.33 km/h) | 35.53 mph (57.17 km/h) |
| 40 mph (64.37 km/h) | 40.6 mph (65.34 km/h) |
| 45 mph (72.42 km/h) | 45.68 mph (73.51 km/h) |
| 50 mph (80.47 km/h) | 50.75 mph (81.67 km/h) |
| 55 mph (88.51 km/h) | 55.83 mph (89.84 km/h) |
| 60 mph (96.56 km/h) | 60.9 mph (98.01 km/h) |
| 65 mph (104.61 km/h) | 65.98 mph (106.18 km/h) |
| 70 mph (112.65 km/h) | 71.05 mph (114.34 km/h) |
| 75 mph (120.7 km/h) | 76.13 mph (122.51 km/h) |
| 80 mph (128.75 km/h) | 81.2 mph (130.68 km/h) |
| 85 mph (136.79 km/h) | 86.28 mph (138.85 km/h) |
| 90 mph (144.84 km/h) | 91.35 mph (147.01 km/h) |
| 95 mph (152.89 km/h) | 96.43 mph (155.18 km/h) |
| 100 mph (160.93 km/h) | 101.5 mph (163.35 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1712 | 1988 | 2141 | 2236 | 2338 | 2411 | 2491 | 2586 | 2717 | 2848 | 2993 | 3110 | 3321 | 3554 | 3736 | 3853 | 3918 | 4159 | 4494 | 5222 |
Better Fuel Economy Factory Ratios Increased Power
