Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 295/25-21 | 305/30-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 26.81 (680.9) | 26.2 (665.6) | -0.6 (-15.3) -2.2% |
| Width inches (mm) | 11.61 (295) | 12.01 (305) | 0.39 (10) 3.4% |
| Circum. inches (mm) | 84.22 (2139.11) | 82.32 (2091.04) | -1.89 (-48.07) -2.2% |
| Sidewall Height inches (mm) | 2.9 (73.75) | 3.6 (91.5) | 0.7 (17.75) 24.1% |
| Revolutions per mile (km) | 752.34 (467.48) | 769.64 (478.23) | 17.29 (10.75) 2.3% |
305/30-19 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.55 mph (31.46 km/h) |
| 25 mph (40.23 km/h) | 24.44 mph (39.33 km/h) |
| 30 mph (48.28 km/h) | 29.33 mph (47.2 km/h) |
| 35 mph (56.33 km/h) | 34.21 mph (55.06 km/h) |
| 40 mph (64.37 km/h) | 39.1 mph (62.93 km/h) |
| 45 mph (72.42 km/h) | 43.99 mph (70.79 km/h) |
| 50 mph (80.47 km/h) | 48.88 mph (78.66 km/h) |
| 55 mph (88.51 km/h) | 53.76 mph (86.53 km/h) |
| 60 mph (96.56 km/h) | 58.65 mph (94.39 km/h) |
| 65 mph (104.61 km/h) | 63.54 mph (102.26 km/h) |
| 70 mph (112.65 km/h) | 68.43 mph (110.12 km/h) |
| 75 mph (120.7 km/h) | 73.31 mph (117.99 km/h) |
| 80 mph (128.75 km/h) | 78.2 mph (125.85 km/h) |
| 85 mph (136.79 km/h) | 83.09 mph (133.72 km/h) |
| 90 mph (144.84 km/h) | 87.98 mph (141.59 km/h) |
| 95 mph (152.89 km/h) | 92.87 mph (149.45 km/h) |
| 100 mph (160.93 km/h) | 97.75 mph (157.32 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1959 | 2275 | 2450 | 2559 | 2675 | 2759 | 2850 | 2959 | 3109 | 3259 | 3425 | 3559 | 3800 | 4067 | 4276 | 4409 | 4484 | 4759 | 5142 | 5976 |
Better Fuel Economy Factory Ratios Increased Power
