Quote:
Originally Posted by bbnks2
You are getting clunking because you did not pry the backing plate off your stock pads. without the backing plate you will have "play" in the caliper... Order new backing plates and your clunk should go away.
For anyone reading this thread and thinking about buying RS29, save your money. These are literally street pads that aren't even as good as stock pads. Per Pagid ( http://www.pagidracing.com/files/Pub...ights_2018.pdf), these pads have a friction coefficient rating of .4-.45 Mu. That makes them an FF rated pad. My stock pads were rated GF which means they have MORE cold bit than these Pagids and they give nothing away at 600f which is where most cars will be at during HPDE. BMW's factory pads are a performance pad and most of the moderate aftermarket pads out there are a downgrade! I highly doubt anyone in this thread is actually "racing" either to require 3000f "race" pads. 99% of cars I see with race pads are screeching around the track eating rotors because the pads are too cold.
Since the comparison is to PFC-08, I will add that they are without a doubt a higher friction true "endurance race pad" compared to the Pagid RSL29's. The PFC-08 will screech a bit when cold (<50f) but they actually have decent cold bite for street use. The flat torque curve of the PFC-08 is a characteristic of an endurance branded pad vs a "peaky" "race/sprint/rally" pad. Also, all pads drag on the rotor at all times. There is no true "retractive" force to pull the pads away from the rotor. PFC-08 make more noise especially when new with "tall" pads. After a good rain they make a ton of noise as the pads actually rust really easily.
If you want to go with a comparable Pagid pad to PFC-08 you should be looking at something like the RSL1 and not the street pads like RSL29's. RSL29 would be more on par with being called a OE replacement pad. Genuine BMW pads will cost you about the same but OEM branded pads will be significantly cheaper replacements. |
The OEM Pad will become soft and will smear itself on the rotor at a track like Laguna Seca if you drive in under 1:50. RS29 will not do that and will provide consistent braking. The clunking noise on the RS29 is due to the fact that it doesn't have the "stoppers" that the OEM pad has. Hence, it will move back and forth inside the caliper. It does get stopped by the pin, but there is still a decent amount of slop that results in the clunks.