Quote: Originally Posted by toomany MBZ Timken wheel bearings don't come with races. Other manufacturers do. Timken does sell both ways, with or without the race. It depends on the supplier, and whether you verify the matched pair. Thankfully Detroit metro area still has massive infrastructure supporting manufacturing = many bearing companies are local here, (selling to the public). .

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ASE Master Mechanic
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Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
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1973 300D
1973 309D - stolen
1978 280SE
1980 240D
1983 300D
1984 190D

I replaced both frt hub bearings without new races ,the outcome was ok on drivers side ,but passengers I have a noticeable hum that comes and goes every 4 seconds at 60mph ,after a week the sound is mostly gone ,may go in and check out the sleeve on the bearings ,new races are the way to go.

I see, my local dealer sells the bearings only.

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