Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 325/25-21 | 305/45-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 27.4 (695.9) | 36.81 (934.9) | 9.41 (239) 34.3% |
| Width inches (mm) | 12.8 (325) | 12.01 (305) | -0.79 (-20) -6.2% |
| Circum. inches (mm) | 86.07 (2186.23) | 115.63 (2937.07) | 29.56 (750.84) 34.3% |
| Sidewall Height inches (mm) | 3.2 (81.25) | 5.4 (137.25) | 2.2 (56) 68.9% |
| Revolutions per mile (km) | 736.13 (457.41) | 547.94 (340.47) | -188.18 (-116.93) -25.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 26.87 mph (43.24 km/h) |
| 25 mph (40.23 km/h) | 33.59 mph (54.05 km/h) |
| 30 mph (48.28 km/h) | 40.3 mph (64.86 km/h) |
| 35 mph (56.33 km/h) | 47.02 mph (75.67 km/h) |
| 40 mph (64.37 km/h) | 53.74 mph (86.48 km/h) |
| 45 mph (72.42 km/h) | 60.45 mph (97.29 km/h) |
| 50 mph (80.47 km/h) | 67.17 mph (108.1 km/h) |
| 55 mph (88.51 km/h) | 73.89 mph (118.91 km/h) |
| 60 mph (96.56 km/h) | 80.61 mph (129.72 km/h) |
| 65 mph (104.61 km/h) | 87.32 mph (140.53 km/h) |
| 70 mph (112.65 km/h) | 94.04 mph (151.34 km/h) |
| 75 mph (120.7 km/h) | 100.76 mph (162.15 km/h) |
| 80 mph (128.75 km/h) | 107.48 mph (172.96 km/h) |
| 85 mph (136.79 km/h) | 114.19 mph (183.78 km/h) |
| 90 mph (144.84 km/h) | 120.91 mph (194.59 km/h) |
| 95 mph (152.89 km/h) | 127.63 mph (205.4 km/h) |
| 100 mph (160.93 km/h) | 134.34 mph (216.21 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1394 | 1620 | 1744 | 1822 | 1905 | 1964 | 2029 | 2106 | 2213 | 2320 | 2439 | 2534 | 2706 | 2896 | 3044 | 3139 | 3192 | 3388 | 3661 | 4254 |
Better Fuel Economy Factory Ratios Increased Power
