* Warped Brake Drums (if applicable): While you replaced the rotors, if your truck has rear drum brakes, those could be warped. Drum brakes are harder to inspect visually for warping.
* Caliper Issues: A sticking or seized brake caliper can cause uneven braking and resulting shake. Inspect the calipers for smooth movement and proper piston retraction. Sometimes a rebuild kit or caliper replacement is necessary.
* Brake Pads: Unevenly worn or damaged brake pads can also lead to vibration. Check the thickness and condition of all pads. If they are worn unevenly, it could indicate a problem with the calipers or other braking components.
* Wheel Bearings: Worn wheel bearings can introduce vibration that is felt when braking. Jack up the truck and check for play in the wheels. A noticeable amount of play indicates worn bearings.
* Suspension Components: Worn ball joints, tie rod ends, control arm bushings, or other suspension parts can transmit vibration to the steering wheel and body when braking. Inspect these components for play or damage.
* Improper Wheel Mounting/Balance: Although you've mentioned new wheels and tires, it's crucial to rule out incorrect installation. Make absolutely sure the wheels are properly balanced. An imbalance, even a slight one, can cause shaking at higher speeds, especially when braking. Have a professional rebalance them to be certain.
* Rotor Installation: It's possible the new rotors weren't properly installed. Ensure they are correctly seated and torqued to specification.
Troubleshooting Steps:
1. Visual Inspection: Carefully inspect all brake components for damage, wear, or corrosion.
2. Test Drive: Take the truck for a test drive, paying close attention to when the shaking occurs (at specific speeds, only when braking hard, etc.). This information can help pinpoint the source.
3. Professional Inspection: If you're not comfortable inspecting the brake system yourself, take the truck to a qualified mechanic. They have the tools and expertise to diagnose the problem accurately.
Safety Note: Brake problems can be dangerous. If you're experiencing significant brake shake, avoid driving the truck until the issue is resolved. Have it towed to a mechanic if necessary.
