Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 245/65-19 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 31.54 (801.1) | 1.85 (46.9) 6.2% |
| Width inches (mm) | 6.5 (165) | 9.65 (245) | 3.15 (80) 48.5% |
| Circum. inches (mm) | 93.28 (2369.39) | 99.08 (2516.73) | 5.8 (147.34) 6.2% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 6.27 (159.25) | 0.42 (10.75) 7.2% |
| Revolutions per mile (km) | 679.22 (422.05) | 639.46 (397.34) | -39.76 (-24.71) -5.9% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 21.24 mph (34.19 km/h) |
| 25 mph (40.23 km/h) | 26.55 mph (42.74 km/h) |
| 30 mph (48.28 km/h) | 31.87 mph (51.28 km/h) |
| 35 mph (56.33 km/h) | 37.18 mph (59.83 km/h) |
| 40 mph (64.37 km/h) | 42.49 mph (68.38 km/h) |
| 45 mph (72.42 km/h) | 47.8 mph (76.92 km/h) |
| 50 mph (80.47 km/h) | 53.11 mph (85.47 km/h) |
| 55 mph (88.51 km/h) | 58.42 mph (94.02 km/h) |
| 60 mph (96.56 km/h) | 63.73 mph (102.57 km/h) |
| 65 mph (104.61 km/h) | 69.04 mph (111.11 km/h) |
| 70 mph (112.65 km/h) | 74.35 mph (119.66 km/h) |
| 75 mph (120.7 km/h) | 79.66 mph (128.21 km/h) |
| 80 mph (128.75 km/h) | 84.97 mph (136.75 km/h) |
| 85 mph (136.79 km/h) | 90.29 mph (145.3 km/h) |
| 90 mph (144.84 km/h) | 95.6 mph (153.85 km/h) |
| 95 mph (152.89 km/h) | 100.91 mph (162.4 km/h) |
| 100 mph (160.93 km/h) | 106.22 mph (170.94 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1627 | 1890 | 2036 | 2126 | 2223 | 2292 | 2368 | 2458 | 2583 | 2708 | 2846 | 2957 | 3158 | 3379 | 3552 | 3663 | 3725 | 3954 | 4273 | 4965 |
Better Fuel Economy Factory Ratios Increased Power
