Track or not....a Brembo caliper or even a bmw caliper should not have that low of design tolerances. Brakes should be the one thing over engineered and robust. Not an area for cost cutting.
However, I do feel more tests are needed to fully understand.
1. We need those with street cars to advise what their caliper pistons look like and at what mileage.
2. We need those with a stock car and stock pads who have tracked their car to advise what their pistons look like and mileage?
3. Also, we need Vin id and build dates of affected cars so as to determine if this issue is widespread or isolated.
These facts will help to start building our case.
Thanks.
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