Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 330/75-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 37.49 (952.2) | 4.88 (124) 15% |
| Width inches (mm) | 12.01 (305) | 12.99 (330) | 0.98 (25) 8.2% |
| Circum. inches (mm) | 102.44 (2601.87) | 117.77 (2991.42) | 15.34 (389.56) 15% |
| Sidewall Height inches (mm) | 4.8 (122) | 9.74 (247.5) | 4.94 (125.5) 102.9% |
| Revolutions per mile (km) | 618.53 (384.34) | 537.99 (334.29) | -80.55 (-50.05) -13% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.99 mph (37.01 km/h) |
| 25 mph (40.23 km/h) | 28.74 mph (46.26 km/h) |
| 30 mph (48.28 km/h) | 34.49 mph (55.51 km/h) |
| 35 mph (56.33 km/h) | 40.24 mph (64.76 km/h) |
| 40 mph (64.37 km/h) | 45.99 mph (74.01 km/h) |
| 45 mph (72.42 km/h) | 51.74 mph (83.26 km/h) |
| 50 mph (80.47 km/h) | 57.49 mph (92.52 km/h) |
| 55 mph (88.51 km/h) | 63.23 mph (101.77 km/h) |
| 60 mph (96.56 km/h) | 68.98 mph (111.02 km/h) |
| 65 mph (104.61 km/h) | 74.73 mph (120.27 km/h) |
| 70 mph (112.65 km/h) | 80.48 mph (129.52 km/h) |
| 75 mph (120.7 km/h) | 86.23 mph (138.77 km/h) |
| 80 mph (128.75 km/h) | 91.98 mph (148.02 km/h) |
| 85 mph (136.79 km/h) | 97.73 mph (157.28 km/h) |
| 90 mph (144.84 km/h) | 103.48 mph (166.53 km/h) |
| 95 mph (152.89 km/h) | 109.22 mph (175.78 km/h) |
| 100 mph (160.93 km/h) | 114.97 mph (185.03 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1369 | 1590 | 1713 | 1789 | 1870 | 1928 | 1992 | 2068 | 2173 | 2278 | 2394 | 2488 | 2657 | 2843 | 2989 | 3082 | 3134 | 3327 | 3595 | 4177 |
Better Fuel Economy Factory Ratios Increased Power
