* Wheels and Tires: This is the most common culprit. Look for:
* Unbalanced tires: The most likely cause. Improperly balanced tires will vibrate at specific speeds.
* Bent rims: A bent rim will cause vibration, especially at higher speeds. Inspect the rims carefully for any bends or damage.
* Worn tires: Uneven tire wear can contribute to vibration. Check the tread depth and look for uneven wear patterns.
* Tire pressure: Incorrect tire pressure can affect balance and ride quality. Check and inflate to the manufacturer's recommended pressure.
* Driveshaft: A worn or unbalanced driveshaft can cause vibrations in this speed range. This is more likely on rear-wheel drive Mustangs. Look for signs of damage like unusual noises or play in the shaft.
* Suspension Components: While less likely to cause vibration *only* in that specific speed range, worn suspension components (ball joints, tie rod ends, control arm bushings) can contribute to overall vibration that might be more noticeable at higher speeds.
* Brake Rotors: Warped brake rotors can cause pulsating vibrations, especially when braking, but could sometimes contribute to a general vibration felt through the car at higher speeds.
* Transmission Issues: Less likely, but problems within the transmission could indirectly cause vibrations. This is usually accompanied by other symptoms, such as unusual noises or difficulty shifting.
* Engine Balance: Though less common, internal engine balance issues could theoretically contribute to vibrations. This is usually accompanied by other significant engine problems.
Troubleshooting Steps:
1. Start with the simplest and cheapest: Get your tires rotated, balanced, and have the tire pressure checked. This is the most common fix.
2. Visual Inspection: Carefully inspect your wheels, tires, and driveshaft for any obvious damage.
3. Professional Inspection: If the problem persists after checking tires and wheels, take your Mustang to a qualified mechanic for a thorough inspection. They have the tools and expertise to diagnose more complex issues.
It's crucial to address vibration issues promptly. Ignoring them can lead to further damage and potentially dangerous driving conditions.
