shotgun_banjo

How many front rotor sizes does the non real AMG GLE have? I am not sure if my eyes are playing tricks but it seems I see different front rotor sizes on GLE 350 and 450 with or without the sport package. I know the drilled rotors are now only on real AMG cars. The other question is can you still get the MB drilled rotors for the 350 and 450 in the future if it is time for a brake job?

GregW / Oregon

I believe there are two, plus the AMG optional system: Standard, AMG Exterior Package "sports brake system," and the AMG High-Performance Braking System (U29). As noted, the 2020 AMG package had vented discs, but not those since. Not sure if those rotors would still be orderable; I'm betting not.

Ron.s

I could be wrong but I thought the front rotor size on the GLE 450 with the AMG body was the same as the GLE 53 with drilled rotors. As you mentioned, my 2020 GLE 450 had drilled rotors but I didn’t measure the diameter. The high performance brakes add huge 6 piston fixed calipers to the same size rotors. That’s what I remember, but I’m not 100% certain.

GregW / Oregon

I believe that is correct.

threeMBs

This is '21 53 with standard brakes (front drilled rotors suppose to be 15.8"):


This is '20 450 with AMG sport exterior P31 ('21-on front rotors should be the same 14.8" size except not drilled):


This is '20 450 standard:


To me '20 450 "AMG" and "Standard" both look like having identical sized (14.8" specs) rotors, except drilled for "AMG" and not for "standard".
Notice that dust shield (same p/n for all except 63) is very visible in both 450s and not in 53 .In addition, do not see MB putting 15.8" front rotor on any 450 and only 15.4" on previous generation's GLE63S.

GregW / Oregon

That doesn't seem to jive with the requirement for 20" d. minimum wheels with the AMG Exterior Package. According to this https://mbworld.org/forums/gle-class...ml#post7656624, standard is 14.8", but 15.75" on AMG Line and 53. That being said, without removing a wheel, my AMG Line fronts appear to be 14.8". To be continued.

threeMBs

Exactly.

threeMBs

It is difficult to find specs and p/n on US Mercedes Dealers websites for 167 platform (amazing since the cars are in production for almost 3 years). Usually I cross check Brembo's US site - brembostoreusa.com - for all rotors and pads p/n (they are very accurate for 2019 and prior MYs). Well Brembo's US site has nothing for 167 platform.

So I checked International/European Brembo site and they have them listed!

GLE63 - massive front 15.8" (400x38) and large rear 14.6" (370x32) rotors:
https://www.bremboparts.com/europe/e...tFiltered=true

GLE53 - lists above rotors as optional with "sport package" (US DPP or stand alone "U29/Silver Calipers"), but lists 14.8" (not 15.8") front as standard (it does not list "standard" rear, but I assume they have to be the same as rears for 450/580 see below):
https://www.bremboparts.com/europe/e...tFiltered=true

GLE450 (same GLE580) - only 14.8" front rotors (drilled for P31/"AMG" sport exterior, solid for "standard") and solid 13.6" rear rotors:
https://www.bremboparts.com/europe/e...tFiltered=true

mikapen

I don't know what the Euro "Sport Package" on the 53 is, but the U70 Dynamic Plus package has 15.675" front rotors, per my "pretty accurate" measurements.
Either Brembo has it wrong, or the Euro brakes are smaller. IDK if they even offer Dynamic Plus, for that matter.

threeMBs

"GLE53 - lists above rotors as optional with "sport package" (US ARC or stand alone "U29")". I will edit "US ARC" to "US DPP" to avoid confusion.

Further research shows the following p/n for 167 rotors:
1674210901 - 14.8" solid front rotor
1674211001 - 14.8" drilled front rotor
1674211101 - 14.8" drilled front rotor (looks like two different p/n for same size rotor)
1674213600 - 15.8" drilled front 2pc rotor std 63 and opt on 53 with DPP or "U29/Silver Calipers".

So if standard (without DPP/U29) 53 is equipped with 15.8" front rotors, what is the p/n?

mikapen

Hard to know, between Euro Markets and the US. At a glance, the standard 53 has smaller brakes, but looks can be deceiving with different sized wheels.

IF this helps - My "DE6 Dynamic Plus Package" (from build sheet) lists "P71 Dynamic Plus Package" and "U70 Red Brake Calipers." Nowhere does it list brakes separately, so it doesn't fit the Brembo listings. BTW, AMG rotor holes are Cast, not Drilled, FWIW. Brembo's may be drilled.

Also, all the pictures of the 15.8" rotors show four pistons, not six, and that adds to the confusion. (I did another search on your part number above - it looks like nobody has a real picture of the actual disc.

There sure is a difference in feel!

threeMBs

All US 167 63s, 53s with P71(which as you said includes U70 red calipers) and 53s with U29 silver calipers($2,500 stand alone option) use identical 2pc 15.8" (400x38) front rotors. That is for sure and is indisputable. What is not certain is the p/n. Per Brembo, it is 1674213600, but per MB EPC it is 167421120107.
What is still up in the air, is the size of the front cross drilled rotors for "standard" 53. If it is 14.8", then there are two p/n above to choose from (this info is per Brembo and is kind of odd, why would MB have two different p/ns for the same rotor?). However, many have said pointing to mbusa.com (but no-one verified by measuaring on their vehicles) that it is (different from 63's) 15.8", and if so what is the p/n?

mikapen

Perhaps there are one or two piece rotors referred to?
I don't know why you would need a two-piece rotor with a floating caliper, as I think exists on the base 53.

MBUSA isn't reliable either. I just checked their configurator, and it shows 15.8" for the silver caliper upgrade, and 16.5" for the Red calipers included with the DPP. But we already knew that is incorrect.

All I can say for sure, is that mine are in the 15.8" range, and the stopping power of the red calipers is significantly higher than the 53 base brakes.

​​​​

threeMBs

I do not think you get it. The discussion is NOT regarding your 53 with DPP (which btw does have 2pc rotors upfront, even if you do not know/see it), which was already settled elsewhere as having identical brakes - rotors and calipers - as 63. (FYI, those 53s with $2,500 silver calipers option stop identical to those 53s with red calipers DPP because all brakes hardware is the same, unless you believe that red color has better stopping friction).

The question above was if '20 GLE450 sport has identical front rotors as "base" 53. If was settled that GLE450 has 14.8" rotors (earlier sport "AMG" model had drilled). The question is still open on "base" 53 front rotors. I know at least one member who upgraded 53 from "base" brakes to 63/53DPP brakes. "Base" 53 brake parts are up for sale in classifieds and would be great to know the size (is it 15.8" front?) and the p/n.

mikapen

Yes, I get it just fine. That's exactly what I have been talking about. No need to be rude.

If you don't trust the information you're getting here, the only solution is to go measure one yourself!

shotgun_banjo

I agree. What confuses me is that in the dealer's lot I see 450s with sport package that looks like it has smaller rotors as I see the shield more then I see a 350 with sport package looking like it has bigger rotors.

tery

Here is what I found out for "Stander" GLE53 brake, I think its pretty accurate

If you stander GLE53 without the 6 pistons caliper option and rotor measured out to be 15.8". You should order P/N A1674211201( 400x38mm) and brake pads P/N 0004203404 or Textar 2296201

Rear for stander GLE53 is the same for all regular GLEs . Rear Disc P/N A1674238900 and rear pads P/N 0004207303 or 0004203805 or Textar 2272303

Don't forget to order brake pad warning sensor P/N 98048710 Textar. All my OE part has Textar stamped on it.

tery

Correction to my post on top. GLE53 “Stander” brake rotor part is PN A1674211101. It’s 400x36mm. It’s NOT 400x38mm !