What's the consensus on Bilstein PSS9s for the B5 S4?
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With some pretty extensive data, Unfortunately they were tested on a M3. But from I read they thought it was a good suspension on the street but they bottomed out while being tracked. And that was after being set up by the factory.
I don't know how that translates over to the S4, so this is probably a useless post, but maybe it's food for thought.
I don't know how that translates over to the S4, so this is probably a useless post, but maybe it's food for thought.