Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 235/40-18 | 235/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 25.4 (645.2) | 29.03 (737.3) | 3.63 (92.1) 14.3% |
| Width inches (mm) | 9.25 (235) | 9.25 (235) | 0 (0) 0% |
| Circum. inches (mm) | 79.8 (2026.96) | 91.19 (2316.3) | 11.39 (289.34) 14.3% |
| Sidewall Height inches (mm) | 3.7 (94) | 6.01 (152.75) | 2.31 (58.75) 62.5% |
| Revolutions per mile (km) | 793.97 (493.35) | 694.79 (431.72) | -99.18 (-61.63) -12.5% |
235/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 22.85 mph (36.78 km/h) |
| 25 mph (40.23 km/h) | 28.57 mph (45.98 km/h) |
| 30 mph (48.28 km/h) | 34.28 mph (55.17 km/h) |
| 35 mph (56.33 km/h) | 40 mph (64.37 km/h) |
| 40 mph (64.37 km/h) | 45.71 mph (73.56 km/h) |
| 45 mph (72.42 km/h) | 51.42 mph (82.76 km/h) |
| 50 mph (80.47 km/h) | 57.14 mph (91.95 km/h) |
| 55 mph (88.51 km/h) | 62.85 mph (101.15 km/h) |
| 60 mph (96.56 km/h) | 68.56 mph (110.34 km/h) |
| 65 mph (104.61 km/h) | 74.28 mph (119.54 km/h) |
| 70 mph (112.65 km/h) | 79.99 mph (128.74 km/h) |
| 75 mph (120.7 km/h) | 85.71 mph (137.93 km/h) |
| 80 mph (128.75 km/h) | 91.42 mph (147.13 km/h) |
| 85 mph (136.79 km/h) | 97.13 mph (156.32 km/h) |
| 90 mph (144.84 km/h) | 102.85 mph (165.52 km/h) |
| 95 mph (152.89 km/h) | 108.56 mph (174.71 km/h) |
| 100 mph (160.93 km/h) | 114.27 mph (183.91 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1768 | 2054 | 2212 | 2310 | 2415 | 2490 | 2573 | 2671 | 2806 | 2942 | 3092 | 3213 | 3431 | 3672 | 3860 | 3980 | 4048 | 4296 | 4642 | 5395 |
Better Fuel Economy Factory Ratios Increased Power
