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I understand that the OEM 'Aero-twin' wipers does not perform very well at speeds exceeding 200km/h. It seems that the wiper would flex 'outwards' or 'float' at the ends under excessive wind pressure. This is the same problem experienced by several of the high performance marques. So they have retrofit it back to the conventional wiper type which has more rigidity.

Any comments?

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Just change the wiper insert (rubber). It's a waste of money and resource to change the wiper blade if your old ones are fine. If your OEM wiper blade is worn badly, get some Bosch ones or OEM. Check for prices at local dealers, allgermanparts.com, P dealer such as brandywine, suncoast

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