Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/35-20 | 325/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.41 (721.5) | 28.96 (735.5) | 0.55 (14) 1.9% |
| Width inches (mm) | 12.01 (305) | 12.8 (325) | 0.79 (20) 6.6% |
| Circum. inches (mm) | 89.24 (2266.66) | 90.97 (2310.64) | 1.73 (43.98) 1.9% |
| Sidewall Height inches (mm) | 4.2 (106.75) | 4.48 (113.75) | 0.28 (7) 6.6% |
| Revolutions per mile (km) | 710.01 (441.18) | 696.49 (432.78) | -13.51 (-8.4) -1.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.39 mph (32.81 km/h) |
| 25 mph (40.23 km/h) | 25.49 mph (41.01 km/h) |
| 30 mph (48.28 km/h) | 30.58 mph (49.22 km/h) |
| 35 mph (56.33 km/h) | 35.68 mph (57.42 km/h) |
| 40 mph (64.37 km/h) | 40.78 mph (65.62 km/h) |
| 45 mph (72.42 km/h) | 45.87 mph (73.83 km/h) |
| 50 mph (80.47 km/h) | 50.97 mph (82.03 km/h) |
| 55 mph (88.51 km/h) | 56.07 mph (90.23 km/h) |
| 60 mph (96.56 km/h) | 61.16 mph (98.43 km/h) |
| 65 mph (104.61 km/h) | 66.26 mph (106.64 km/h) |
| 70 mph (112.65 km/h) | 71.36 mph (114.84 km/h) |
| 75 mph (120.7 km/h) | 76.46 mph (123.04 km/h) |
| 80 mph (128.75 km/h) | 81.55 mph (131.25 km/h) |
| 85 mph (136.79 km/h) | 86.65 mph (139.45 km/h) |
| 90 mph (144.84 km/h) | 91.75 mph (147.65 km/h) |
| 95 mph (152.89 km/h) | 96.84 mph (155.85 km/h) |
| 100 mph (160.93 km/h) | 101.94 mph (164.06 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1772 | 2059 | 2217 | 2315 | 2421 | 2497 | 2579 | 2678 | 2813 | 2949 | 3100 | 3221 | 3439 | 3681 | 3869 | 3990 | 4058 | 4307 | 4654 | 5408 |
Better Fuel Economy Factory Ratios Increased Power
