MaxTheNomad

Thank you very much again for your info. I think this is probably the best option without buying another pair of pads. I will get myself a set of these as per number you mentioned.

Hinz Motorsport

Great info as always from Tom. Just wanted to add that while the OP has the wider Race Calipers (ZR95 R - 95.405.290.365.11/12), PFC is working on a solution for customers with Sport Calipers for the street. They will have a street-based compound and the backing plates will feature the spring clips to help reduce noise. As Tom pointed out, the Pistons are different so the "R" calipers pistons will not work with these pads, only Sport calipers. They are also playing around with pad chamfers. We are likely still several months out on this, however. You have extremely stiff calipers and very hard discs, so it's difficult to keep NVH in check. Part of the price you pay for a thoroughbred race kit...

MaxTheNomad

Thank you for the good news Rick. I see that Tom mentioned removal of the piston cap (venting cylinders) are possible on ZR95 R but not on ZR95 S. May I ask what else difference there is to make ZR95 R incompatible to the coming street pads? I thought they are only different in outer dimension (Wider R and narrower S) with the same pistons.

Tom@TPC Racing

I just wanted to clarify that while removal of the piston cap from the piston is possible for the purpose of modular design and for serviceability, the calipers are not intended to be used without the caps! Its one of those situation where just because is possible, it doesn't mean you should do it, like running an engine with no air filter, yes its possible but results can be harmful. Disclaimer: Don't do it just because of a mention. And the caps are very difficult to remove because there's a spring loaded locking mechanism in there designed to withstand(and have proven) harsh motorsport operating environment.

The R caliper is wider, the R caliper is so wide they won't clear stock street car wheels. The wider R caliper has deeper bores that houses taller height pistons, the deeper height pistons also have the same modular design intended for use with piston caps. The likely reason why there won't be a tension clip available for R calipers, in my opinion, is because the tension clip would have to be designed to match the specific travel distance of the of the deeper bores/taller pistons/thicker pads. This effort would be solely to make a full-on motorsport brake caliper quieter for street driving and defeat the zero drag motorsport design.

MaxTheNomad

Thank you for the clarification Tom. The same advice was given by PFC officials that calipers should not work without the insullator and the venting cylinders which may cause overheating and subsequent issues. This is also why I'm looking to buy a set of insultator and venting cylinders for a proper assembly instead of using thicker pads directly. Thank you again for your information and detailed guidance.

AdamSanta85

I've had good luck with CRC Disc Brake Quiet on squeaky pads, as a quick and dirty method. Just smear some on the back of the pad, and it turns into an RTV-like substance that helps it stick to the pistons. It's an inelegant version of the solution @Tom@TPC Racing proposes. Those OEM adhesive pucks are very cool.

MaxTheNomad

Appreciate the option Adam. Have you found them difficult to remove thoroughly? I'm slighly worried about them getting to sticky and hard to remove from the pistons

AdamSanta85

No, it peels right off with your finger nail or whatever, it dries into a pliable rubber. It’s not sticky or anything.

MaxTheNomad

Sounds good as well. I think I will have a go with this before those pad damper arrives