Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 165/90-18 | 235/55-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 29.69 (754.2) | 27.18 (690.3) | -2.52 (-63.9) -8.5% |
| Width inches (mm) | 6.5 (165) | 9.25 (235) | 2.76 (70) 42.4% |
| Circum. inches (mm) | 93.28 (2369.39) | 85.38 (2168.64) | -7.9 (-200.75) -8.5% |
| Sidewall Height inches (mm) | 5.85 (148.5) | 5.09 (129.25) | -0.76 (-19.25) -13% |
| Revolutions per mile (km) | 679.22 (422.05) | 742.1 (461.12) | 62.87 (39.07) 9.3% |
235/55-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 18.31 mph (29.46 km/h) |
| 25 mph (40.23 km/h) | 22.88 mph (36.82 km/h) |
| 30 mph (48.28 km/h) | 27.46 mph (44.19 km/h) |
| 35 mph (56.33 km/h) | 32.03 mph (51.55 km/h) |
| 40 mph (64.37 km/h) | 36.61 mph (58.92 km/h) |
| 45 mph (72.42 km/h) | 41.19 mph (66.28 km/h) |
| 50 mph (80.47 km/h) | 45.76 mph (73.65 km/h) |
| 55 mph (88.51 km/h) | 50.34 mph (81.01 km/h) |
| 60 mph (96.56 km/h) | 54.92 mph (88.38 km/h) |
| 65 mph (104.61 km/h) | 59.49 mph (95.74 km/h) |
| 70 mph (112.65 km/h) | 64.07 mph (103.11 km/h) |
| 75 mph (120.7 km/h) | 68.65 mph (110.47 km/h) |
| 80 mph (128.75 km/h) | 73.22 mph (117.84 km/h) |
| 85 mph (136.79 km/h) | 77.8 mph (125.2 km/h) |
| 90 mph (144.84 km/h) | 82.37 mph (132.57 km/h) |
| 95 mph (152.89 km/h) | 86.95 mph (139.93 km/h) |
| 100 mph (160.93 km/h) | 91.53 mph (147.3 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1888 | 2194 | 2363 | 2467 | 2580 | 2660 | 2748 | 2853 | 2997 | 3142 | 3303 | 3431 | 3664 | 3922 | 4123 | 4251 | 4323 | 4589 | 4958 | 5762 |
Better Fuel Economy Factory Ratios Increased Power
