Guide to 1958-1966 Cadillac Eldorado Wheel Bearings
Understand the signs of failing wheel bearings in your classic Eldorado and how to choose the right replacement.
- The bearings on this classic Eldorado are tapered and must be manually packed with high-temperature grease.
- Symptoms of failure include humming/grinding noises, steering vibration, and a feeling of looseness in the wheel.
- Always replace the bearing and its matching race as a set to prevent premature failure.
- National is a reliable aftermarket brand for this application, as OEM parts are generally unavailable.
Signs of a Bad Wheel Bearing
A failing wheel bearing on a heavy classic car like an Eldorado is a significant safety concern. If a bearing fails completely, the wheel could lock up or even detach from the vehicle. Be aware of these symptoms:
Key Failure Symptoms
- Grinding or Humming Noise: The most common sign is a persistent grinding, humming, or roaring sound coming from a wheel. This noise typically gets louder with speed and may change when you turn. 🎬 Listen to examples of different wheel bearing failure noises.
- Vibration: You might feel a vibration through the steering wheel, which often worsens as you accelerate.
- Loose Steering: The steering may feel vague or less responsive than usual due to excess play in the worn bearing.
- Wheel Wobble: When the car is jacked up, you may be able to physically shake the tire back and forth. Any noticeable movement can indicate a bad bearing.
Choosing the Right Aftermarket Wheel Bearing
For a vintage Cadillac, finding original New Old Stock (NOS) GM bearings is very difficult and expensive. Aftermarket parts are the standard and practical choice. Modern manufacturing often produces high-quality bearings that meet or exceed original specifications.
National Bearing is a well-known aftermarket brand that produces reliable and good-quality replacement bearings suitable for classic cars. Forum discussions among classic car owners generally consider National to be a solid choice, though some prefer premium brands like Timken when available. For this application, a quality aftermarket brand like National is a dependable option.
Pro Tip: Replace as a Set
The wheel bearings on your Eldorado consist of an inner bearing, an outer bearing, and a race for each. It is critical to always replace the bearing and its matching race as a set, even if the old race looks okay. A new bearing will fail quickly if installed on a worn race.
Estimated Replacement Costs
The cost to replace wheel bearings can vary based on your location and whether you do the work yourself. Labor costs for classic cars can sometimes be higher than for modern vehicles.
| Item | Estimated Cost (Per Wheel) |
|---|---|
| New Aftermarket Bearing Kit | $112.76 - $143.10 |
| Shop Labor | $150 - $400 |
Frequently Asked Questions
Is replacing a wheel bearing on a 1958-1966 Eldorado a DIY job?
For someone with mechanical experience, this is a feasible DIY project. It involves removing the wheel and brake drum, tapping out the old races, thoroughly cleaning the hub, packing the new bearings with grease, and reassembling everything. No special presses are required.
🎬 Watch this walkthrough of a Cadillac hub bearing adjustment.How often do I need to service my wheel bearings?
Unlike modern sealed bearings, the tapered bearings on your Eldorado are serviceable. They should be inspected, cleaned, and repacked with fresh, high-temperature wheel bearing grease about every 30,000 miles or whenever you perform major brake work.
What kind of grease should I use?
You must use a high-quality, high-temperature wheel bearing grease designed for disc or drum brake applications. This ensures the grease won't break down from the heat generated during braking.
Are front and rear wheel bearings the same?
No, front and rear wheel bearings are typically different parts with different part numbers. The rear bearings on these Eldorados are also a different design. Ensure you are ordering the correct part for the specific wheel you are servicing.
Helpful Videos
Technical Specifications
OEM Part Numbers: 909066
Tapered Roller Bearing and Race Set. Requires manual grease packing.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.