Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/30-21 | 330/30-22 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.26 (692.4) | 29.8 (756.8) | 2.54 (64.4) 9.3% |
| Width inches (mm) | 10.43 (265) | 12.99 (330) | 2.56 (65) 24.5% |
| Circum. inches (mm) | 85.64 (2175.24) | 93.6 (2377.56) | 7.97 (202.32) 9.3% |
| Sidewall Height inches (mm) | 3.13 (79.5) | 3.9 (99) | 0.77 (19.5) 24.5% |
| Revolutions per mile (km) | 739.85 (459.72) | 676.89 (420.6) | -62.96 (-39.12) -8.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.86 mph (35.18 km/h) |
| 25 mph (40.23 km/h) | 27.33 mph (43.98 km/h) |
| 30 mph (48.28 km/h) | 32.79 mph (52.77 km/h) |
| 35 mph (56.33 km/h) | 38.26 mph (61.57 km/h) |
| 40 mph (64.37 km/h) | 43.72 mph (70.36 km/h) |
| 45 mph (72.42 km/h) | 49.19 mph (79.16 km/h) |
| 50 mph (80.47 km/h) | 54.65 mph (87.95 km/h) |
| 55 mph (88.51 km/h) | 60.12 mph (96.75 km/h) |
| 60 mph (96.56 km/h) | 65.58 mph (105.54 km/h) |
| 65 mph (104.61 km/h) | 71.05 mph (114.34 km/h) |
| 70 mph (112.65 km/h) | 76.51 mph (123.13 km/h) |
| 75 mph (120.7 km/h) | 81.98 mph (131.93 km/h) |
| 80 mph (128.75 km/h) | 87.44 mph (140.72 km/h) |
| 85 mph (136.79 km/h) | 92.91 mph (149.52 km/h) |
| 90 mph (144.84 km/h) | 98.37 mph (158.31 km/h) |
| 95 mph (152.89 km/h) | 103.84 mph (167.11 km/h) |
| 100 mph (160.93 km/h) | 109.3 mph (175.9 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1723 | 2001 | 2155 | 2250 | 2353 | 2426 | 2507 | 2602 | 2734 | 2866 | 3013 | 3130 | 3342 | 3577 | 3760 | 3878 | 3944 | 4185 | 4523 | 5256 |
Better Fuel Economy Factory Ratios Increased Power
