Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/25-20 | 305/35-20 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26 (660.5) | 28.41 (721.5) | 2.4 (61) 9.2% |
| Width inches (mm) | 12.01 (305) | 12.01 (305) | 0 (0) 0% |
| Circum. inches (mm) | 81.69 (2075.02) | 89.24 (2266.66) | 7.54 (191.64) 9.2% |
| Sidewall Height inches (mm) | 3 (76.25) | 4.2 (106.75) | 1.2 (30.5) 40% |
| Revolutions per mile (km) | 775.58 (481.92) | 710.01 (441.18) | -65.57 (-40.74) -8.5% |
305/35-20 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.85 mph (35.16 km/h) |
| 25 mph (40.23 km/h) | 27.31 mph (43.95 km/h) |
| 30 mph (48.28 km/h) | 32.77 mph (52.74 km/h) |
| 35 mph (56.33 km/h) | 38.23 mph (61.53 km/h) |
| 40 mph (64.37 km/h) | 43.69 mph (70.32 km/h) |
| 45 mph (72.42 km/h) | 49.16 mph (79.11 km/h) |
| 50 mph (80.47 km/h) | 54.62 mph (87.9 km/h) |
| 55 mph (88.51 km/h) | 60.08 mph (96.69 km/h) |
| 60 mph (96.56 km/h) | 65.54 mph (105.48 km/h) |
| 65 mph (104.61 km/h) | 71 mph (114.27 km/h) |
| 70 mph (112.65 km/h) | 76.46 mph (123.06 km/h) |
| 75 mph (120.7 km/h) | 81.93 mph (131.85 km/h) |
| 80 mph (128.75 km/h) | 87.39 mph (140.64 km/h) |
| 85 mph (136.79 km/h) | 92.85 mph (149.43 km/h) |
| 90 mph (144.84 km/h) | 98.31 mph (158.22 km/h) |
| 95 mph (152.89 km/h) | 103.77 mph (167.01 km/h) |
| 100 mph (160.93 km/h) | 109.24 mph (175.8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1807 | 2099 | 2260 | 2360 | 2468 | 2545 | 2630 | 2729 | 2868 | 3006 | 3160 | 3283 | 3506 | 3752 | 3944 | 4067 | 4136 | 4390 | 4744 | 5513 |
Better Fuel Economy Factory Ratios Increased Power
