Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/40-23 | 235/55-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 32.61 (828.2) | 33.18 (842.7) | 0.57 (14.5) 1.8% |
| Width inches (mm) | 12.01 (305) | 9.25 (235) | -2.76 (-70) -23% |
| Circum. inches (mm) | 102.44 (2601.87) | 104.23 (2647.42) | 1.79 (45.55) 1.8% |
| Sidewall Height inches (mm) | 4.8 (122) | 5.09 (129.25) | 0.29 (7.25) 5.9% |
| Revolutions per mile (km) | 618.53 (384.34) | 607.89 (377.73) | -10.64 (-6.61) -1.7% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.35 mph (32.75 km/h) |
| 25 mph (40.23 km/h) | 25.44 mph (40.94 km/h) |
| 30 mph (48.28 km/h) | 30.53 mph (49.13 km/h) |
| 35 mph (56.33 km/h) | 35.61 mph (57.31 km/h) |
| 40 mph (64.37 km/h) | 40.7 mph (65.5 km/h) |
| 45 mph (72.42 km/h) | 45.79 mph (73.69 km/h) |
| 50 mph (80.47 km/h) | 50.88 mph (81.88 km/h) |
| 55 mph (88.51 km/h) | 55.96 mph (90.06 km/h) |
| 60 mph (96.56 km/h) | 61.05 mph (98.25 km/h) |
| 65 mph (104.61 km/h) | 66.14 mph (106.44 km/h) |
| 70 mph (112.65 km/h) | 71.23 mph (114.63 km/h) |
| 75 mph (120.7 km/h) | 76.31 mph (122.81 km/h) |
| 80 mph (128.75 km/h) | 81.4 mph (131 km/h) |
| 85 mph (136.79 km/h) | 86.49 mph (139.19 km/h) |
| 90 mph (144.84 km/h) | 91.58 mph (147.38 km/h) |
| 95 mph (152.89 km/h) | 96.66 mph (155.56 km/h) |
| 100 mph (160.93 km/h) | 101.75 mph (163.75 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1547 | 1797 | 1935 | 2021 | 2113 | 2179 | 2251 | 2337 | 2455 | 2574 | 2706 | 2811 | 3002 | 3212 | 3377 | 3482 | 3542 | 3759 | 4062 | 4720 |
Better Fuel Economy Factory Ratios Increased Power
