Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 235/20-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 26.7 (678.2) | -5.91 (-150) -18.1% |
| Width inches (mm) | 12.01 (305) | 9.25 (235) | -2.76 (-70) -23% |
| Circum. inches (mm) | 102.44 (2601.87) | 83.88 (2130.63) | -18.55 (-471.24) -18.1% |
| Sidewall Height inches (mm) | 4.8 (122) | 1.85 (47) | -2.95 (-75) -61.5% |
| Revolutions per mile (km) | 618.53 (384.34) | 755.34 (469.34) | 136.8 (85.01) 22.1% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 16.38 mph (26.36 km/h) |
| 25 mph (40.23 km/h) | 20.47 mph (32.95 km/h) |
| 30 mph (48.28 km/h) | 24.57 mph (39.54 km/h) |
| 35 mph (56.33 km/h) | 28.66 mph (46.13 km/h) |
| 40 mph (64.37 km/h) | 32.76 mph (52.71 km/h) |
| 45 mph (72.42 km/h) | 36.85 mph (59.3 km/h) |
| 50 mph (80.47 km/h) | 40.94 mph (65.89 km/h) |
| 55 mph (88.51 km/h) | 45.04 mph (72.48 km/h) |
| 60 mph (96.56 km/h) | 49.13 mph (79.07 km/h) |
| 65 mph (104.61 km/h) | 53.23 mph (85.66 km/h) |
| 70 mph (112.65 km/h) | 57.32 mph (92.25 km/h) |
| 75 mph (120.7 km/h) | 61.42 mph (98.84 km/h) |
| 80 mph (128.75 km/h) | 65.51 mph (105.43 km/h) |
| 85 mph (136.79 km/h) | 69.61 mph (112.02 km/h) |
| 90 mph (144.84 km/h) | 73.7 mph (118.61 km/h) |
| 95 mph (152.89 km/h) | 77.79 mph (125.2 km/h) |
| 100 mph (160.93 km/h) | 81.89 mph (131.79 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1922 | 2233 | 2405 | 2511 | 2626 | 2707 | 2797 | 2904 | 3051 | 3198 | 3362 | 3493 | 3730 | 3992 | 4196 | 4327 | 4401 | 4671 | 5047 | 5865 |
Better Fuel Economy Factory Ratios Increased Power
