Tire Size Finder (optional):
Stock Sizes
- 255/75-16
Plus Sizes
- 255/75-16
Accepts P-Metric and Inches
| 155/85-18 | 235/65-17 | Difference | |
|---|---|---|---|
| Diameter inches (mm) | 28.37 (720.7) | 29.03 (737.3) | 0.65 (16.6) 2.3% |
| Width inches (mm) | 6.1 (155) | 9.25 (235) | 3.15 (80) 51.6% |
| Circum. inches (mm) | 89.14 (2264.15) | 91.19 (2316.3) | 2.05 (52.15) 2.3% |
| Sidewall Height inches (mm) | 5.19 (131.75) | 6.01 (152.75) | 0.83 (21) 15.9% |
| Revolutions per mile (km) | 710.8 (441.67) | 694.79 (431.72) | -16 (-9.94) -2.3% |
235/65-17 Tires
Speedometer Difference
| Speedo Reading | Actual Speed |
|---|---|
| 20 mph (32.19 km/h) | 20.46 mph (32.93 km/h) |
| 25 mph (40.23 km/h) | 25.58 mph (41.16 km/h) |
| 30 mph (48.28 km/h) | 30.69 mph (49.39 km/h) |
| 35 mph (56.33 km/h) | 35.81 mph (57.62 km/h) |
| 40 mph (64.37 km/h) | 40.92 mph (65.86 km/h) |
| 45 mph (72.42 km/h) | 46.04 mph (74.09 km/h) |
| 50 mph (80.47 km/h) | 51.15 mph (82.32 km/h) |
| 55 mph (88.51 km/h) | 56.27 mph (90.55 km/h) |
| 60 mph (96.56 km/h) | 61.38 mph (98.78 km/h) |
| 65 mph (104.61 km/h) | 66.5 mph (107.02 km/h) |
| 70 mph (112.65 km/h) | 71.61 mph (115.25 km/h) |
| 75 mph (120.7 km/h) | 76.73 mph (123.48 km/h) |
| 80 mph (128.75 km/h) | 81.84 mph (131.71 km/h) |
| 85 mph (136.79 km/h) | 86.96 mph (139.95 km/h) |
| 90 mph (144.84 km/h) | 92.07 mph (148.18 km/h) |
| 95 mph (152.89 km/h) | 97.19 mph (156.41 km/h) |
| 100 mph (160.93 km/h) | 102.3 mph (164.64 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
