Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 305/30-23 | 285/20-23 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 30.2 (767.2) | 27.49 (698.2) | -2.72 (-69) -9% |
| Width inches (mm) | 12.01 (305) | 11.22 (285) | -0.79 (-20) -6.6% |
| Circum. inches (mm) | 94.89 (2410.23) | 86.36 (2193.46) | -8.53 (-216.77) -9% |
| Sidewall Height inches (mm) | 3.6 (91.5) | 2.24 (57) | -1.36 (-34.5) -37.7% |
| Revolutions per mile (km) | 667.71 (414.9) | 733.7 (455.9) | 65.99 (41) 9.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.2 mph (29.29 km/h) |
| 25 mph (40.23 km/h) | 22.75 mph (36.62 km/h) |
| 30 mph (48.28 km/h) | 27.3 mph (43.94 km/h) |
| 35 mph (56.33 km/h) | 31.85 mph (51.26 km/h) |
| 40 mph (64.37 km/h) | 36.4 mph (58.58 km/h) |
| 45 mph (72.42 km/h) | 40.95 mph (65.91 km/h) |
| 50 mph (80.47 km/h) | 45.5 mph (73.23 km/h) |
| 55 mph (88.51 km/h) | 50.05 mph (80.55 km/h) |
| 60 mph (96.56 km/h) | 54.6 mph (87.88 km/h) |
| 65 mph (104.61 km/h) | 59.15 mph (95.2 km/h) |
| 70 mph (112.65 km/h) | 63.7 mph (102.52 km/h) |
| 75 mph (120.7 km/h) | 68.25 mph (109.85 km/h) |
| 80 mph (128.75 km/h) | 72.81 mph (117.17 km/h) |
| 85 mph (136.79 km/h) | 77.36 mph (124.49 km/h) |
| 90 mph (144.84 km/h) | 81.91 mph (131.81 km/h) |
| 95 mph (152.89 km/h) | 86.46 mph (139.14 km/h) |
| 100 mph (160.93 km/h) | 91.01 mph (146.46 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1867 | 2169 | 2336 | 2439 | 2550 | 2630 | 2717 | 2821 | 2964 | 3107 | 3265 | 3393 | 3623 | 3877 | 4076 | 4203 | 4275 | 4537 | 4902 | 5697 |
Better Fuel Economy Factory Ratios Increased Power
