ECS does have great Customer Service. I am going to send them the old ones back and they will send me a new set of 12.5mm. They have the same suspicions I have, which is the 15mm might be from a faulty batch.
So we'll see. Keeping my fingers crossed that the new ones work. The X5 looks kind of funny with the 30mm on the rear and nothing up front. I'll update the thread once I get the new ones on.
Thanks for all the input fellas. This is a great forum!
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06 3.0i
97 M3/4/5
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