Tom Feldmann

Hey lads/ladies,
I'm doing a brake job today...new front rotors and pads. I replaced the rotor..looks good, but I can't seem to get the RS29s to fit in. They're just too thick! I've taken the anti-vibrating shim out and they still won't fit in. Are you supposed to run them without the shim? Are you supposed to face the pads before you install them?

How do you actually use these pads?

Thanks,
Tom

Tom Feldmann

Update:
Rear pads fit fine...still perplexed on the fronts.

-Tom

Backmarker

Probably obvious but did you use a clamp to fully compress the pistons in the calipers?

Tom Feldmann

Yup.
I even tried fitting them with the old rotor and no go so it's not the new rotor being thicker that's causing the issue either.

Backmarker

Hmm, I have RS29s on my GT3 and they fit fine, maybe you got sent the wrong part number

Tom Feldmann

Sorry, didn't specify my car. I've got a 997.1 C2S so I don't have GT3 brake calipers. The part number for GT3 brakes is different from the C2S.

However...you do bring up a good point...I ordered part# U2474 and I got part# E2474. That being said Pagid is renaming their brake pads from RS29 to RSL29 so perhaps this is just the new version..(?)

-Tom

kisik

U2474 is correct number for C2S. I remember it was a big pain to fit them comparing to PFCs. Try to shave a mm, what can you do? No need for shims.

Carrera51

U2474 is the correct shape for your front calipers. Pagid makes these 18.5mm thick. Performance Friction's pad for this caliper, PF7818 is 17mm thick. Hawk's version HB340.710 is 18mm thick.

Check the thickness of the pad (including the backing plate) and if it's thicker than 18.5mm then I would report this to the supplier you purchased the pads from and see if the others they have in stock are also too thick.

Kind regards,

Tom Feldmann

Thanks guys,
I measured .782 inches (~18.49mm) so sounds like they're spot on from the manufacturer. They just don't want to fit...maybe I've got playskool calipers or something?

Is it normal to have to shave them?

-Tom

Tom Feldmann

OK...I just shaved them *washes hands

Thanks for the info guys.