Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/35-23 | 385/40-26 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 31.41 (797.7) | 38.13 (968.4) | 6.72 (170.7) 21.4% |
| Width inches (mm) | 12.01 (305) | 15.16 (385) | 3.15 (80) 26.2% |
| Circum. inches (mm) | 98.66 (2506.05) | 119.78 (3042.32) | 21.11 (536.27) 21.4% |
| Sidewall Height inches (mm) | 4.2 (106.75) | 6.06 (154) | 1.86 (47.25) 44.3% |
| Revolutions per mile (km) | 642.18 (399.03) | 528.99 (328.7) | -113.2 (-70.34) -17.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 24.28 mph (39.07 km/h) |
| 25 mph (40.23 km/h) | 30.35 mph (48.84 km/h) |
| 30 mph (48.28 km/h) | 36.42 mph (58.61 km/h) |
| 35 mph (56.33 km/h) | 42.49 mph (68.38 km/h) |
| 40 mph (64.37 km/h) | 48.56 mph (78.15 km/h) |
| 45 mph (72.42 km/h) | 54.63 mph (87.92 km/h) |
| 50 mph (80.47 km/h) | 60.7 mph (97.69 km/h) |
| 55 mph (88.51 km/h) | 66.77 mph (107.46 km/h) |
| 60 mph (96.56 km/h) | 72.84 mph (117.22 km/h) |
| 65 mph (104.61 km/h) | 78.91 mph (126.99 km/h) |
| 70 mph (112.65 km/h) | 84.98 mph (136.76 km/h) |
| 75 mph (120.7 km/h) | 91.05 mph (146.53 km/h) |
| 80 mph (128.75 km/h) | 97.12 mph (156.3 km/h) |
| 85 mph (136.79 km/h) | 103.19 mph (166.07 km/h) |
| 90 mph (144.84 km/h) | 109.26 mph (175.84 km/h) |
| 95 mph (152.89 km/h) | 115.33 mph (185.6 km/h) |
| 100 mph (160.93 km/h) | 121.4 mph (195.37 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1346 | 1564 | 1684 | 1759 | 1839 | 1896 | 1959 | 2034 | 2137 | 2240 | 2354 | 2446 | 2612 | 2795 | 2939 | 3030 | 3082 | 3271 | 3534 | 4107 |
Better Fuel Economy Factory Ratios Increased Power
