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Showing results for tags 'brakes shims anti-squeal'.
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After reviewing online videos, the Boxster brake pad replacement process seemed simple and straightforward, so got new pads and began the task. Something immediately seemed wrong. Whereas in the video, the old pads were easily withdrawn after removing the pins and spring retainers and retracting the pistons, mine wouldn't budge. Looking closely, it looked like my pistons were stuck to the pads (and mighty small pistons they were, strangely). A bit of research revealed, of course, that I was looking at the locating buttons on the shim plates, p/n 996 351 088 02. The videos I watched obviously were of a base Boxster that does not use shim plates. That brings up several questions: 1. What the best method of freeing the plates from the pads, or should I simply remove the calipers and extract the pads and shims as a unit? 2. Are the shims needed (do they do their job of keeping the brakes quiet)?, and if so, can I re-adhere the old shims to the new pads (what adhesive will withstand the heat)? 3. What's the downside of eliminating them entirely and simply using an anti-squeal compound as I have done on all the other cars I've owned? (I know, a Porsche is not any other car). The cheapest I've been able to find the shims for is $40 for a set of four. Few pad sets come with them, evidently, nor do the websites selling the pads have a "you may also need" reference to the shims. I've searched the forums, and strangely, the issue has never been fully addressed on this forum, as far as I can determine. On another forum, some claim that shops routinely omit them, and the claims of their effectiveness is all over the map. One commenter mentioned that he leaves them out so that he can quickly change his pads from street to track. Any and all knowledgeable comments will be much appreciated!