Thanks.
Rotor thickness
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2022 AMG GT 53, 2020 Sl450. Did drive 2018 S450
Rotor thickness
My front rotors are 35.3 and rear 23.3 mm. Anyone know if these are in spec for S450 non amg, non sport 4Matic? Or guide me to where to look? Don’t want to change them when I do brakes unless I have to. Thx.
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2022 AMG GT 53, 2020 Sl450. Did drive 2018 S450
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So, why is there a minimum thickness ??
The mass of the rotor is what "absorbs" the instantaneous heat added while braking, and then the air-flow dissipates the heat into the air.
When the rotors get too thin, they cannot absorb as much heat as may be required--panic stop for 120 MPH;
AND..................................... the pads+pistons can come out of the calipers--but this is drastically too thin.
The mass of the rotor is what "absorbs" the instantaneous heat added while braking, and then the air-flow dissipates the heat into the air.
When the rotors get too thin, they cannot absorb as much heat as may be required--panic stop for 120 MPH;
AND..................................... the pads+pistons can come out of the calipers--but this is drastically too thin.
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2022 AMG GT 53, 2020 Sl450. Did drive 2018 S450
Rotors appeared within spec so just changed pads front and back. Pads from auto zone for $80. Reused sensors as they had not triggered. It was the easiest brake job I’ve ever done. Took about an hour. Hardest part was lifting the wheels to put back on as they’re so heavy!
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I had a repair shop call me about rotors being tooo thin, I showed up 30 minutes later with a micrometer without notice, and ask to see which rotor was too thin; holding the micrometer in the air in front of their face.
I guess nobody ever questioned their judgement before.
I guess nobody ever questioned their judgement before.
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2022 AMG GT 53, 2020 Sl450. Did drive 2018 S450
Here are the pads I used. Braking is much sharper than the brembo pads previously installed.
https://www.autozone.com/brakes-and-...688/393155_0_0
https://www.autozone.com/brakes-and-...689/393156_0_0
https://www.autozone.com/brakes-and-...688/393155_0_0
https://www.autozone.com/brakes-and-...689/393156_0_0
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2022 AMG GT 53, 2020 Sl450. Did drive 2018 S450
Got the brake sensor alert on dash. I guess one of the old sensors was faulty. Replaced both. Didn’t have to take pads off, just the wheel. Lesson learnt- change the sensors regardless next time!
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Curious whether you get squeaking. My mechanic said he always does the rotors because, even if still within spec, swapping out the pads while keeping the rotors often results in the brakes squeaking, which most customers can't abide.
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2022 AMG GT 53, 2020 Sl450. Did drive 2018 S450
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changing rotors is a good ting but not required if flat and greater then min thickness.
If not replacing them then having them put on lathe and trued up is a good thing.
Seems all good things cost money?
If not replacing them then having them put on lathe and trued up is a good thing.
Seems all good things cost money?
