When to change out these WPC bearings - BMW M5 Forum and M6 Forums
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post #1 of 5 Old 22nd July 2016, 04:39 PM Thread Starter
SinCitySpeed
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When to change out these WPC bearings

I've had the wpc treated bearings in the car for over 30k miles now. Are they not so good on the crank? When might I want to get fresh bearings in there? It's an 07 with 103k miles daily driver. Thx


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post #2 of 5 Old 22nd July 2016, 11:47 PM
jonbly
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Nobody knows! Thanks for playing the Rod Bearing Lottery!

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Personally, I'm planning to keep changing mine every 60k miles regardless of type.
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post #3 of 5 Old 23rd July 2016, 03:19 AM
jcolley
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Based on the way mine looked at 14k, I'd say no more than 50k.

Can't say if it was the WPC treatment that accelerated the wear, but on the principle of operation hardness shouldn't matter if the bearing is spec'd properly to allow the correct film layer to be established.
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post #4 of 5 Old 24th July 2016, 08:36 AM
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post #5 of 5 Old 24th July 2016, 05:19 PM
jcolley
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OEM bolts.

To clarify, I don't think WPC is the issue on these, I think the 702/703 bearings are on a stock crank.
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