Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 365/40-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 34.5 (876.2) | 1.89 (48) 5.8% |
| Width inches (mm) | 12.01 (305) | 14.37 (365) | 2.36 (60) 19.7% |
| Circum. inches (mm) | 102.44 (2601.87) | 108.37 (2752.66) | 5.94 (150.8) 5.8% |
| Sidewall Height inches (mm) | 4.8 (122) | 5.75 (146) | 0.94 (24) 19.7% |
| Revolutions per mile (km) | 618.53 (384.34) | 584.65 (363.28) | -33.88 (-21.05) -5.5% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.16 mph (34.05 km/h) |
| 25 mph (40.23 km/h) | 26.45 mph (42.57 km/h) |
| 30 mph (48.28 km/h) | 31.74 mph (51.08 km/h) |
| 35 mph (56.33 km/h) | 37.03 mph (59.59 km/h) |
| 40 mph (64.37 km/h) | 42.32 mph (68.1 km/h) |
| 45 mph (72.42 km/h) | 47.61 mph (76.62 km/h) |
| 50 mph (80.47 km/h) | 52.9 mph (85.13 km/h) |
| 55 mph (88.51 km/h) | 58.19 mph (93.64 km/h) |
| 60 mph (96.56 km/h) | 63.48 mph (102.16 km/h) |
| 65 mph (104.61 km/h) | 68.77 mph (110.67 km/h) |
| 70 mph (112.65 km/h) | 74.06 mph (119.18 km/h) |
| 75 mph (120.7 km/h) | 79.35 mph (127.7 km/h) |
| 80 mph (128.75 km/h) | 84.64 mph (136.21 km/h) |
| 85 mph (136.79 km/h) | 89.93 mph (144.72 km/h) |
| 90 mph (144.84 km/h) | 95.22 mph (153.24 km/h) |
| 95 mph (152.89 km/h) | 100.51 mph (161.75 km/h) |
| 100 mph (160.93 km/h) | 105.8 mph (170.26 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1488 | 1728 | 1861 | 1944 | 2032 | 2096 | 2165 | 2248 | 2362 | 2475 | 2602 | 2703 | 2887 | 3090 | 3248 | 3349 | 3406 | 3615 | 3906 | 4539 |
Better Fuel Economy Factory Ratios Increased Power
