* Tire Pressure: Uneven tire pressure is a common cause. Check the pressure in all four tires and inflate them to the manufacturer's recommended pressure (found on a sticker usually located on the driver's side doorjamb or in the owner's manual).
* Tire Wear: Uneven tire wear can also cause pulling. Check the tread depth and wear pattern on all tires. Significant wear on one side of a tire indicates a problem that needs addressing.
* Steering Box: A problem within the steering box itself (worn gears, internal leaks) could cause a pull. This would require a professional diagnosis.
* Brake Issues: A dragging caliper or brake issue on one side can cause pulling. Inspect the brake pads and calipers for uneven wear or sticking.
* Bent Frame or Axle: While less likely if the front end components checked out, a bent frame or axle could be causing misalignment even if the components themselves appear fine. This would require a professional inspection.
* Alignment: Even with good components, the alignment could be off. A proper wheel alignment is crucial.
* Transfer Case/Drivetrain Issues (4x4): On a 4x4, problems in the transfer case or drivetrain could cause pulling. This is less likely if the problem only happens on a dry road in 2WD.
What to Do:
1. Check tire pressure and tread wear. This is the easiest and cheapest thing to check first.
2. Visually inspect brakes for sticking calipers or uneven wear.
3. Take it to a qualified mechanic. If you've checked the basics and the pulling persists, a professional inspection is necessary to diagnose the problem accurately. They have the tools and expertise to pinpoint the issue, whether it's a subtle alignment problem or a more serious mechanical fault.
Don't continue driving with a persistent pull. It's unsafe and could lead to further damage.