Originally Posted by
Bonzo Banana
You haven't stated the wheels unless I've missed it but sounds like the wrong type of brake pads were used for the rim material possibly so it could be a user error type of situation unfortunately.
Admittedly I can't quite get my head around what is going on but surely it is either the wrong material in the brake pads for those wheels or some sort of contaminant. Maybe you are using brake pads meant for aluminium rims with carbon rims or vice versa?
Leaving the wheel manufacturer out for now, but they were alloy wheels and Shimano R55C4 pads for aluminum rims, Swissstop BXP pads for aluminum rims (softer than Shimano pads), and finally, the oft-lauded ultra soft Kool Stop Salmon Dura 2 for aluminum rims (softest pad on market?). Like I said, the wheel manufacturer said something seemed wrong and even the Shimano pads should have been fine. When the Kool Stops were no good, he said send the wheels back.