GSF/ RCF brake discs

hockeyedwards · December 15, 2019

Hello F-ers 😉, looking to replace or upgrade my brake discs on my GSF, it would seem most places I've looked at online just detail RCF discs/ pad sets. Just making sure I don't make a F-up but are the RCF discs the same as the GSF? Any recommendations for aftermarket ones appreciated 😄 Shiny wheel and caliper pic attached for fun 😛

Killysprint · December 16, 2019

RCF = GSF

hockeyedwards · December 16, 2019

8 hours ago, Killysprint said:

RCF = GSF

I thought as much, just making sure I didn't make a fools assumption 😛

LexusPartsDirect · December 18, 2019

Hi Kieran

Tim is correct, both models share a great deal of parts, the discs among them.

Front right = 43512-0W100 Front Left = 43516-0W020

We sell the front pair as a set here at £242.39.

Rear Right = 42431-0W050 Rear Left = 42432-0W010

We also have the rear pair as a set, they are on the website here at £258.19.

Postage is £5.99 and they are available for two working day delivery.

V8ORBUST · February 10, 2020

The brembo USA store has front discs that are working out at £160 for the pair after a 10% discount is applied.

I assume these discs will be more than adequate for my needs.

I am fortunately able to readily travel state side and can pick up from there, so it may well be the best option for me.

Dealer has reported my discs are pitted and a lip is starting to form, to be assessed at next service.

£1700 quote, I did giggle.

hockeyedwards · February 10, 2020

53 minutes ago, V8ORBUST said:

am fortunately able to readily travel state side and can pick up from there

Out of interest when is this likely to be? I'm due for service in a month and expecting to be told I need discs so have started eyeing replacements up 😄

ColinBarber · February 10, 2020

3 hours ago, V8ORBUST said:

Dealer has reported my discs are pitted and a lip is starting to form, to be assessed at next service.

Stock discs are 34 mm thick, minimum allowable thickness is 31 mm so you are allowed 1.5 mm lip each side (assuming wear is even). It would have been nice if your dealer actually measured and told you the thickness, but that is hoping for too much 😞

V8ORBUST · February 10, 2020

51 minutes ago, ColinBarber said:

Stock discs are 34 mm thick, minimum allowable thickness is 31 mm so you are allowed 1.5 mm lip each side (assuming wear is even). It would have been nice if your dealer actually measured and told you the thickness, but that is hoping for too much 😞

They've only measured my pad wear, I've got 4mm front and 6mm rear, so no rush on either.

Front disc is forming a lip and is corroded on inner face.

Rear disc scored and corroded on inner face.

Has anybody fitted brembo pads on the front? According to Autozone they fit, but on the brembo site they are listed for the LS460, not RCF.

Part no P83154N

Cheers

V8ORBUST · February 11, 2020

I've ordered the front discs from brembo USA, same equivalent part numbers as Lexus.

£174 so a saving of roughly £70 vs the cheapest Lexus boxed ones.

hockeyedwards · February 11, 2020

21 hours ago, V8ORBUST said:

listed for the LS460

The EBC reds are listed as LS460's as well, I bought and fitted the fronts without issue, plus much less brake dust and squeal!

V8ORBUST · February 11, 2020

19 minutes ago, hockeyedwards said:

The EBC reds are listed as LS460's as well, I bought and fitted the fronts without issue, plus much less brake dust and squeal!

My only concern is the brembo store site not mentioning compatibility with the RCF.

I am sure they do fit, but maybe the compound is incorrect? The equivalent Lexus code is different too.

@Comedian purchased some, I'm not sure if he ever fitted them.

@hockeyedwards how do you rate the EBC's so far?

hockeyedwards · February 11, 2020

@V8ORBUST Yeah there has been a lot of mention regarding possible incorrect compound.

The EBC's have been great tbh, significantly less brake dust and I have had 0 brake squeal since installing 😄 I'd go with them again next time around as well.

V8ORBUST · February 11, 2020

Just now, hockeyedwards said:

@V8ORBUST Yeah there has been a lot of mention regarding possible incorrect compound.

The EBC's have been great tbh, significantly less brake dust and I have had 0 brake squeal since installing 😄 I'd go with them again next time around as well.

Good to know. My detailer said the lexus fitted pads are crazy in terms of dust.

I think I may spend the extra and get the EBC reds. At least we know they work!

As for the rears, they are at 6mm, that's something to worry about later me thinks.

hockeyedwards · February 11, 2020

2 minutes ago, V8ORBUST said:

I think I may spend the extra and get the EBC reds. At least we know they work!

Considering the price of Lexus standard pads compared to the EBC's, they are a bargain! I'm due for service next month so I'll know how good the rears are.

The front pads are also ridiculously easy to DIY fit, plus got to deep clean the calipers and wheels 😍

V8ORBUST · February 11, 2020

Glad to hear they are easy fit. I'll have to make sure I whip them off before they hit 2mm!

ColinBarber · February 11, 2020

34 minutes ago, V8ORBUST said:

My only concern is the Brembo store site not mentioning compatibility with the RCF.

I am sure they do fit, but maybe the compound is incorrect? The equivalent Lexus code is different too.

Yes they will fit, and yes the compound will be different - no way Lexus are going to let the brakes on an LS squeal. Not sure you can say the compound is wrong - it just won't have the same bite or the same fade resistance - but if you aren't going to use on a track then you probably won't notice any difference day to day. I guess they may be similar to the alternative pads Lexus do under the TSB to stop brake squeal on the RC F, or even one compound lower still.

I'm happy with my EBC pads, can't really tell any difference in feel however I'm still only a few hundred miles in at this point.

Killysprint · February 11, 2020

Another thumbs up for the EBC reds here. Done about 6000 miles on them since they were changed and no deterioration in performance - but once bedded in, much less dust.

V8ORBUST · February 11, 2020

Thanks for the feedback guys.

The brembos are $75 plus tax, so around $80. I might be able to get 10% of that. So at around £50 they work out less than half the price of the EBC redstuff.

Might be worth a gamble.