Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 290/65-18 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 32.84 (834.2) | 3.15 (80) 10.6% |
| Width inches (mm) | 6.5 (165) | 11.42 (290) | 4.92 (125) 75.8% |
| Circum. inches (mm) | 93.28 (2369.39) | 103.18 (2620.72) | 9.89 (251.33) 10.6% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 7.42 (188.5) | 1.57 (40) 26.9% |
| Revolutions per mile (km) | 679.22 (422.05) | 614.09 (381.57) | -65.14 (-40.47) -9.6% |
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.12 mph (35.6 km/h) |
| 25 mph (40.23 km/h) | 27.65 mph (44.5 km/h) |
| 30 mph (48.28 km/h) | 33.18 mph (53.4 km/h) |
| 35 mph (56.33 km/h) | 38.71 mph (62.3 km/h) |
| 40 mph (64.37 km/h) | 44.24 mph (71.2 km/h) |
| 45 mph (72.42 km/h) | 49.77 mph (80.1 km/h) |
| 50 mph (80.47 km/h) | 55.3 mph (89 km/h) |
| 55 mph (88.51 km/h) | 60.83 mph (97.9 km/h) |
| 60 mph (96.56 km/h) | 66.36 mph (106.8 km/h) |
| 65 mph (104.61 km/h) | 71.89 mph (115.7 km/h) |
| 70 mph (112.65 km/h) | 77.43 mph (124.6 km/h) |
| 75 mph (120.7 km/h) | 82.96 mph (133.5 km/h) |
| 80 mph (128.75 km/h) | 88.49 mph (142.4 km/h) |
| 85 mph (136.79 km/h) | 94.02 mph (151.3 km/h) |
| 90 mph (144.84 km/h) | 99.55 mph (160.2 km/h) |
| 95 mph (152.89 km/h) | 105.08 mph (169.11 km/h) |
| 100 mph (160.93 km/h) | 110.61 mph (178.01 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1563 | 1815 | 1955 | 2042 | 2135 | 2201 | 2274 | 2361 | 2480 | 2600 | 2733 | 2840 | 3032 | 3245 | 3411 | 3518 | 3578 | 3797 | 4103 | 4768 |
Better Fuel Economy Factory Ratios Increased Power
