Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 265/70-19 | 305/85-19.5 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 33.61 (853.6) | 39.91 (1013.8) | 6.31 (160.2) 18.8% |
| Width inches (mm) | 10.43 (265) | 12.01 (305) | 1.57 (40) 15.1% |
| Circum. inches (mm) | 105.58 (2681.66) | 125.39 (3184.95) | 19.81 (503.28) 18.8% |
| Sidewall Height inches (mm) | 7.3 (185.5) | 10.21 (259.25) | 2.9 (73.75) 39.8% |
| Revolutions per mile (km) | 600.13 (372.9) | 505.3 (313.98) | -94.83 (-58.93) -15.8% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 23.75 mph (38.23 km/h) |
| 25 mph (40.23 km/h) | 29.69 mph (47.78 km/h) |
| 30 mph (48.28 km/h) | 35.63 mph (57.34 km/h) |
| 35 mph (56.33 km/h) | 41.57 mph (66.9 km/h) |
| 40 mph (64.37 km/h) | 47.51 mph (76.46 km/h) |
| 45 mph (72.42 km/h) | 53.45 mph (86.01 km/h) |
| 50 mph (80.47 km/h) | 59.38 mph (95.57 km/h) |
| 55 mph (88.51 km/h) | 65.32 mph (105.13 km/h) |
| 60 mph (96.56 km/h) | 71.26 mph (114.68 km/h) |
| 65 mph (104.61 km/h) | 77.2 mph (124.24 km/h) |
| 70 mph (112.65 km/h) | 83.14 mph (133.8 km/h) |
| 75 mph (120.7 km/h) | 89.08 mph (143.35 km/h) |
| 80 mph (128.75 km/h) | 95.01 mph (152.91 km/h) |
| 85 mph (136.79 km/h) | 100.95 mph (162.47 km/h) |
| 90 mph (144.84 km/h) | 106.89 mph (172.02 km/h) |
| 95 mph (152.89 km/h) | 112.83 mph (181.58 km/h) |
| 100 mph (160.93 km/h) | 118.77 mph (191.14 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1286 | 1494 | 1609 | 1680 | 1756 | 1811 | 1871 | 1943 | 2041 | 2139 | 2249 | 2336 | 2495 | 2670 | 2807 | 2895 | 2944 | 3124 | 3376 | 3923 |
Better Fuel Economy Factory Ratios Increased Power
