What Are the Reasons for Frequent Deviation During Straight-Line Driving?
2 Answers
Frequent deviation during straight-line driving is primarily due to the driver's lack of vehicle awareness, meaning they notice the vehicle's tilt too late—only when the deviation becomes very obvious. By then, correcting the direction often results in noticeable body sway. In reality, a vehicle cannot maintain a perfectly straight line while moving due to road surface influences. Therefore, timely direction adjustments are necessary when noticing any tilt. During straight-line driving, controlling the line of sight is crucial. Narrowed vision while driving can easily lead to vehicle deviation, which is a major reason why many novice drivers frequently experience this issue.
Buddy, I know your situation well. When a car pulls to one side, it's most likely a tire issue. Uneven tire pressure on the left and right is the most common cause - use a tire pressure gauge to check the difference between both sides. If it exceeds 0.2 bar, you'll need to adjust it. Misaligned wheel alignment parameters are even more troublesome, often caused by deformed steering tie rods or undercarriage impacts. Sometimes a stuck brake caliper can also drag the wheel and cause pulling - you'll know by feeling the wheel hub temperature after driving a stretch. Once my car kept pulling right, and after much troubleshooting, I found the left front suspension bushing was cracked. To fix it, you need to systematically check: start with the tires, then alignment, and finally inspect the undercarriage. Don't rush into wheel alignment and waste money. Keeping both hands on the wheel at highway speeds is crucial, especially when passing large trucks - the crosswinds can make the steering pull scarily.
