Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 70/90-19 | 80/90-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 23.96 (608.6) | 23.67 (601.2) | -0.29 (-7.4) -1.2% |
| Width inches (mm) | 2.76 (70) | 3.15 (80) | 0.39 (10) 14.3% |
| Circum. inches (mm) | 75.27 (1911.97) | 74.36 (1888.73) | -0.92 (-23.25) -1.2% |
| Sidewall Height inches (mm) | 2.48 (63) | 2.83 (72) | 0.35 (9) 14.3% |
| Revolutions per mile (km) | 841.72 (523.02) | 852.08 (529.46) | 10.36 (6.44) 1.2% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 19.76 mph (31.8 km/h) |
| 25 mph (40.23 km/h) | 24.7 mph (39.74 km/h) |
| 30 mph (48.28 km/h) | 29.64 mph (47.69 km/h) |
| 35 mph (56.33 km/h) | 34.57 mph (55.64 km/h) |
| 40 mph (64.37 km/h) | 39.51 mph (63.59 km/h) |
| 45 mph (72.42 km/h) | 44.45 mph (71.54 km/h) |
| 50 mph (80.47 km/h) | 49.39 mph (79.49 km/h) |
| 55 mph (88.51 km/h) | 54.33 mph (87.44 km/h) |
| 60 mph (96.56 km/h) | 59.27 mph (95.39 km/h) |
| 65 mph (104.61 km/h) | 64.21 mph (103.34 km/h) |
| 70 mph (112.65 km/h) | 69.15 mph (111.28 km/h) |
| 75 mph (120.7 km/h) | 74.09 mph (119.23 km/h) |
| 80 mph (128.75 km/h) | 79.03 mph (127.18 km/h) |
| 85 mph (136.79 km/h) | 83.97 mph (135.13 km/h) |
| 90 mph (144.84 km/h) | 88.91 mph (143.08 km/h) |
| 95 mph (152.89 km/h) | 93.84 mph (151.03 km/h) |
| 100 mph (160.93 km/h) | 98.78 mph (158.98 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2168 | 2519 | 2713 | 2833 | 2962 | 3054 | 3156 | 3276 | 3442 | 3608 | 3792 | 3940 | 4208 | 4503 | 4734 | 4881 | 4964 | 5269 | 5693 | 6616 |
Better Fuel Economy Factory Ratios Increased Power
