My car is in for its 10k mile service right now. I asked them if they can double check to ensure my brake squeal is as expected with F Sport pads and they called me the next day saying the squeal is NOT normal and they got approval from Lexus to perform a TSB on their first 2019 model.

From what I can see, the TSB instructs replacement of the brake pads, rotors, and updated shims.

The original brake pad part number is 04465-30500 and the new part number is 04465-30510. Is the 30510 part number non-F Sport? I definitely don’t want reduced braking power just to resolve the squeal that I get despite how often it occurs.

The dealership assured me the new pads are still F Sport and compared to the GS F TSB, it doesn’t discuss “alternative material” in the IS TSB. I’m just not sure the TSB has enough information for them to make that determination.

Edit: 100% confirmed F Sport brakes will be replaced with non-F Sport on RWD models with the TSB

 

I did some research into this before I replaced my brake pads with the Akebono. The 30510 is the normal non-f sport brake pads according to LexusPartsnow.

 

It is probably just the shims that need upgrading... I think there was a TSB specifically talking about that... And it said that if a customer experiences brake noise, replace shims with the updated shims...

 

blue is low friction, black is high friction. unless they code their pads differently now.

if the pads are blue, send it back.

i'll have the spaghetti, salad on the side. if the salad is on top, i send it back.

 

Here is some info from a 2IS thread from back in 2016 (the front caliper from the 2IS 350 and 3IS 300, 200t, and 350 are all the same):

04465-30450 are made by NBK (Pad Material: D6893H)
04465-30510 are made by Advics (Pad Material: PV565H)

Neither are the high-friction pads which are 04465-30500 (made by Textar, Pad Material: T4146)

This would confirm that the 30510 pads existed since the 3IS model started, and also are not the high-friction pads.
However, when we are talking about street application, how hard would you need to drive to realistically notice the difference in brake performance between the high and low friction pads?
I realize just by their nature there should be a difference, the question is, will YOU actually notice it?!

 

This always confuses me. My 2016 350 F-Sport came with the 04465-30510 pads that are made by Advics (Pad Material: PV565H.)

I would have assumed it would have come with the High Friction pads by Textar. What model in the IS line actually come with the Textar pads? I would have assumed the 350 F-Sport IS would have

 

It also possible they could have changed suppliers overs the year. The info i posted was from mid-2016, so your car should have had the Textar.
Did you remove the pads and confirm the manufacturers name and material stamp number? I'm asking to figure out how you determined they were Advics and not Textar's...even though you stated they were the 30510, which wouldn't be stamped on the part itself, only on the parts box.

I'm actually heading to the dealer now to buy 350 F-Sport pads form my 250 with the front brake conversion. This should be interesting cause they will likely ask me for the VIN, which will be no help to them.

 

I took out a pad to look at it and there were no part numbers on the pad, and I honestly can't remember if I saw a manufacturer. I know the caliper said Advics. When I went to Lexus Parts Now to order the pads using my VIN it stated the 04465-30500 was not compatible and pointed me to the 04465-30510 (which are black pads).

Let me know what you find out when you hit the dealer. thanks

 

Just got the call that the car is done. They in fact replaced pads and rotors. Definitely going to find out for sure what part numbers were used.

If I find out the car has non-F Sport parts, I will not be signing for it as I specifically requested they do not remove and F Sport components to rectify the issue.

 

Look at the pads. are they black? see the post in my sig. they should look like that.

They should look like this. they don't have the german flag on it, but they should read textar.

there's other models which use essentially the same pad shape, just a different compound. so technically you can use Lexus LS pads too, which are likely a semi ceramic compound to reduce noise and dust, at the expense of braking, and probably supplied by Advics

 

And here's what the low frictions would look like. they're blue-backed. note the goldish, yellowish look to the compound. that's likely ceramics to reduce noise and dust, at the expense of friction and heat capacity.

 

I have the black pads with the 04465-30510 part # which are Advics. Perhaps the low dust pads are all black now as well.

 

Previous gen IS350 came w/ black pads that are NOT high friction pads. sometimes, some stores/parts suppliers reference the old 2IS pads for the 3IS. They use the same caliper hardware.

i'd just make sure you confirm that the pads are textar. if it's not, you aren't getting the highest performing factory pad

 

Here's the standard non F Sport pad in black branded advics which is for earlier IS/GS models using the same caliper hardware. I am not sure if the new blue pads are these, just painted blue. i'd have to see them side by side.

 

What sucks is that I got the part number from the Lexus dealer (they used my VIN). I may just install the ADVICS to see how they feel. I wonder how much of a difference I will really feel. Thanks for your help.