Lexus IS 500 GSF / RCF Brake upgrade
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NotaTrueF (07-25-24)
09-01-24 | 11:04 AM
#319
4th Gear
Joined: Jan 2024
Posts: 4
Likes: 13
From: GA
IS500 vs RCF Rotor size
Hey All,
Wanted to post - I just completed this on my 2024 IS500. Thanks to the info from lojackfty, Rodney (Video below) and two folks over on FB - Here's the parts / $ I went with. Exactly as shown in the video, however I did only fronts. I don't want to mess with rear until we have some sort of decent solution for the EPB.
https://www.youtube.com/watch?v=HVWPS7VSx24
Lexus OEM Parts
4738950020 2 $ 7.59 Brake line Gaskets (1 Per side)
049470W020 2 $ 33.54 Fitting Kit (1 Per side)
477300W160 1 $ 349.38 Blue Brake Caliper (Right, Front)
477500W160 1 $ 349.38 Blue Brake Caliper (Left, Front)
Brembo OE Parts
P83154N 1 $ 66.95 Brembo OE Pads (Front)
-- Bought the two rotors as a kit for $224.95
09.C266.11 1 Brembo OE Rotor (Left, Front)
09.C266.21 1 Brembo OE Rotor (Right, Front)
If you go with OEM brakes you'll need these too:
049450W020 1 $ 15.12 Disc Brake Pad Shim Kit (Front)
Pretty straightforward process:
- Jack car at the jack points
- Turn wheel to one side to give full access to caliper
- Break the brake line connection bolt to the caliper, then hand tight. This is easier done while on the knuckle versus afterwards.
- Normal procedure to remove pads/caliper/rotor
- Leave Caliper hung up while doing the rest
- Cut off about 3/4 inch on the top and bottom ending points of the dust shield. The best way to gauge this is to leave the dust shield on, and hold the new caliper up to it and you can visually see how much to cut
- Paint what was cut with high temp brake caliper paint or the like to prevent rust
- Put dust shield back on, and normal procedure to put caliper, pads and rotor on
- Swing the brake line over to the new caliper
- Bleed brakes, if you have access to a Techstream you can also pull up the bleed procedure on there and it will push fluid through the caliper
- Repeat on drivers side
If anyone ever needs any help on this, feel free to PM me!
Wanted to post - I just completed this on my 2024 IS500. Thanks to the info from lojackfty, Rodney (Video below) and two folks over on FB - Here's the parts / $ I went with. Exactly as shown in the video, however I did only fronts. I don't want to mess with rear until we have some sort of decent solution for the EPB.
https://www.youtube.com/watch?v=HVWPS7VSx24
Lexus OEM Parts
4738950020 2 $ 7.59 Brake line Gaskets (1 Per side)
049470W020 2 $ 33.54 Fitting Kit (1 Per side)
477300W160 1 $ 349.38 Blue Brake Caliper (Right, Front)
477500W160 1 $ 349.38 Blue Brake Caliper (Left, Front)
Brembo OE Parts
P83154N 1 $ 66.95 Brembo OE Pads (Front)
-- Bought the two rotors as a kit for $224.95
09.C266.11 1 Brembo OE Rotor (Left, Front)
09.C266.21 1 Brembo OE Rotor (Right, Front)
If you go with OEM brakes you'll need these too:
049450W020 1 $ 15.12 Disc Brake Pad Shim Kit (Front)
Pretty straightforward process:
- Jack car at the jack points
- Turn wheel to one side to give full access to caliper
- Break the brake line connection bolt to the caliper, then hand tight. This is easier done while on the knuckle versus afterwards.
- Normal procedure to remove pads/caliper/rotor
- Leave Caliper hung up while doing the rest
- Cut off about 3/4 inch on the top and bottom ending points of the dust shield. The best way to gauge this is to leave the dust shield on, and hold the new caliper up to it and you can visually see how much to cut
- Paint what was cut with high temp brake caliper paint or the like to prevent rust
- Put dust shield back on, and normal procedure to put caliper, pads and rotor on
- Swing the brake line over to the new caliper
- Bleed brakes, if you have access to a Techstream you can also pull up the bleed procedure on there and it will push fluid through the caliper
- Repeat on drivers side
If anyone ever needs any help on this, feel free to PM me!
Question: are the rotors on the IS 500 and RCF the same size or does the RCF have larger rotors?
09-01-24 | 11:41 AM
#320
Rookie
Joined: Jul 2023
Posts: 38
Likes: 14
From: HI
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BChoCRNA (09-01-24)
09-01-24 | 04:40 PM
#321
Racer
Joined: May 2012
Posts: 1,949
Likes: 1,364
From: CA
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wfibear (09-03-24)
10-05-24 | 09:21 AM
#322
Advanced
Joined: Jul 2023
Posts: 645
Likes: 499
From: AZ
Possibly dumb question, never had a car worth upgrading to a bbk. If I upgrade to the rcf/gsf rotots will any rotor that's 380mm in diameter, 35mm thickness, and 5x114 bolt pattern work? Or is there anything else that i need to consider? What would be the min/max diameter and thickness? TIA.
10-05-24 | 05:06 PM
#323
Racer
Joined: May 2012
Posts: 1,949
Likes: 1,364
From: CA
Possibly dumb question, never had a car worth upgrading to a bbk. If I upgrade to the rcf/gsf rotots will any rotor that's 380mm in diameter, 35mm thickness, and 5x114 bolt pattern work? Or is there anything else that i need to consider? What would be the min/max diameter and thickness? TIA.
10-07-24 | 06:46 PM
#324
Thread Starter
Intermediate
Joined: Jan 2008
Posts: 327
Likes: 226
From: CALIFORNIA
10-08-24 | 06:26 AM
#325
Intermediate
Joined: Jul 2021
Posts: 421
Likes: 144
From: CA
Any of you notice a noise that sounds like what might be pad rattle on your ISF calipers when going over a bump? Both sides do this after my ISF caliper upgrade. I am running Project Mu pads in the front.
10-08-24 | 09:40 AM
#326
Intermediate
Joined: Sep 2008
Posts: 460
Likes: 5
From: hawaii
@Pittsy @TurkishRambo
How are your BBMS kits holding up after some time? I am debating pulling the trigger on them, but am very very hesitant on brakes coming from a private label factory.
How are your BBMS kits holding up after some time? I am debating pulling the trigger on them, but am very very hesitant on brakes coming from a private label factory.
10-11-24 | 03:18 PM
#328
Advanced
Joined: Jul 2023
Posts: 645
Likes: 499
From: AZ
10-13-24 | 02:55 PM
#329
5th Gear
Joined: Dec 2023
Posts: 5
Likes: 0
From: FL
What are the solutions for the front dust shields? For the individuals who have done the install, have you cut them or just gotten rid of them?
Upgraded front brakes at the cost of (obviously a good penny) but also the dust shield.
Any advice?
Upgraded front brakes at the cost of (obviously a good penny) but also the dust shield.
Any advice?
10-13-24 | 04:20 PM
#330
Pit Crew
Joined: Mar 2022
Posts: 158
Likes: 163
From: CA
Pretty sure most people just cut/trim the dust shields...
check the 14minute mark of this video