Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 90/80-16 | 30/10.5-16 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 21.67 (550.4) | 30.09 (764.18) | 8.42 (213.78) 38.8% |
| Width inches (mm) | 3.54 (90) | 10.51 (267) | 6.97 (177) 196.7% |
| Circum. inches (mm) | 68.08 (1729.13) | 94.52 (2400.74) | 26.44 (671.61) 38.8% |
| Sidewall Height inches (mm) | 2.83 (72) | 7.04 (178.89) | 4.21 (106.89) 148.5% |
| Revolutions per mile (km) | 930.72 (578.32) | 670.35 (416.54) | -260.37 (-161.79) -28% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 27.77 mph (44.69 km/h) |
| 25 mph (40.23 km/h) | 34.71 mph (55.86 km/h) |
| 30 mph (48.28 km/h) | 41.65 mph (67.03 km/h) |
| 35 mph (56.33 km/h) | 48.59 mph (78.21 km/h) |
| 40 mph (64.37 km/h) | 55.54 mph (89.38 km/h) |
| 45 mph (72.42 km/h) | 62.48 mph (100.55 km/h) |
| 50 mph (80.47 km/h) | 69.42 mph (111.72 km/h) |
| 55 mph (88.51 km/h) | 76.36 mph (122.89 km/h) |
| 60 mph (96.56 km/h) | 83.3 mph (134.07 km/h) |
| 65 mph (104.61 km/h) | 90.25 mph (145.24 km/h) |
| 70 mph (112.65 km/h) | 97.19 mph (156.41 km/h) |
| 75 mph (120.7 km/h) | 104.13 mph (167.58 km/h) |
| 80 mph (128.75 km/h) | 111.07 mph (178.75 km/h) |
| 85 mph (136.79 km/h) | 118.01 mph (189.93 km/h) |
| 90 mph (144.84 km/h) | 124.96 mph (201.1 km/h) |
| 95 mph (152.89 km/h) | 131.9 mph (212.27 km/h) |
| 100 mph (160.93 km/h) | 138.84 mph (223.44 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1706 | 1982 | 2134 | 2229 | 2330 | 2403 | 2483 | 2577 | 2708 | 2838 | 2984 | 3100 | 3310 | 3543 | 3724 | 3840 | 3905 | 4145 | 4479 | 5205 |
Better Fuel Economy Factory Ratios Increased Power
