Rotor rubs on caliper, any ideas?
AudiWorld Super User
Joined: Jan 2008
Posts: 2,697
Likes: 8
From: NE Ohio
According to the tag on my Audi service record manual, my code is 1LX which is what the rotors I bought are made for. The two rotors you show are the (approximately) 16.7mm offset and the 22.7mm offset. Supposedly the 22.7mm offset is only for the A6 with the 4.2L. But like I said, the Audi parts department said a 320x30mm rotor is called out for my car. He gave me a print-out with the part number that I mentioned before, I have this at home and I will scan it when I get back. Either way, that rotor from Audi is identical to the rotor from blauparts and to the rotor I took off my car (except for the turned down thickness) and neither of the new rotors fit without rubbing on the caliper. It seems the rotor dimensions are correct so something else must be different. I did change the cv shafts a year and a half ago or so but I am not sure how that would affect this situation although its in the same area. I installed the blauparts rotors with 2 mm thick washers in between where the caliper mounts to the upright and it centered the rotor perfectly and so far there are no issues but it should not have to be this way...
This is what you have and took off the car:
Brake disc (ventilated) .
PR-1LA,1LD. 320X30 5/112. VENTILATED DISC. BRAKE ROTER. ROTER.
Stock Code 8E0615301AD ; 8D0-615-301-K; 8D0-615-301-M; 8D0615301K; 8D0615301M
Manufacturer Audi
Categories Wheels and Brakes
And then this what shows with your PR Code 1LX
VENTILATED DISC. BRAKE ROTER. ROTER.
Stock Code 4B3615301
Manufacturer Audi
Categories Wheels and Brakes
Assemblies Floating caliper floating caliper brake disc (ventilated) front front ((A6) Audi A6/Avant
321X30MM 5/112.
(1LX) Brake type, front: Disc brakes, front.
(T7S) 4.2L.
(A6Q) Audi A6/S6 quattro
321X30MM 5/112.
PR-T7S.)
What's odd here is the "your" original rotor part #8D0615301M that was removed from the car does not even list on the second example with an 1LX pr code with a 4B3615301 part number, notice the pr codes.
Your offset math confuses me because the side view dimensions are 1) overall height, 2) rotor thickness, 3) hat height, So lets assume that when you minus 1 and 2 this should be the offset or hat height.
So here is my point and what I really think is going on here, the rotors that you pulled of the car were not the right ones from the start and some one turned them down for clearance, the 4B3615301 or Bendix PRT5555 listed for the 1LX pr code has a offset of 23.4mm by my math with a taller hat setting it back were you need it, the one you got from blau and the dealership has an offset of 16.2mm being forward by 7.2mm were you don't need it.
Tech Guru
Joined: Mar 2003
Posts: 6,006
Likes: 2
yup.
and that's why we'll miss you :-)
But this is still confusing since he says the old ones - that were working or came with the car????????? - did the same thing. I'm confused now.
Start from the beginning. (OP)
Grant
and that's why we'll miss you :-)
But this is still confusing since he says the old ones - that were working or came with the car????????? - did the same thing. I'm confused now.
Start from the beginning. (OP)
Grant
AudiWorld Super User
Joined: Jan 2008
Posts: 2,697
Likes: 8
From: NE Ohio
I know that's right
About the OP, Grant I've read his post over and over and can see what's going on here and I don't think he is reading into the info offered to correlate the difference's, offset's are offset's right. I ran into the same crap with my 01 on the rears and the hat height that did not match the pr code.
Thread Starter
Audiworld Junior Member
Joined: Jul 2012
Posts: 13
Likes: 0
because audi can, does, and will continue to, switch and supersede parts without warning or good documentation.
take my car, my front axles have a standard cv join on the inside, same as the outside. according to audi, they shouldn't exist on my car in the USA, but a select number during the split year (2002) were built with EU spec parts due to not having the USA spec parts from the manufacturer soon enough.
fast forward, now when i look i cant find parts for that axle, and im pretty much SOL when the inner goes as while the cv joint can be replaced with a standard part, the retaining clips are not being sold in the USA anymore and i cant source them from germany.
long story short, sometimes audi does crap behinds the scenes and it pisses everyone off, my advice would ne to get ETKA ASAP. its the only thing that keeps me somewhat sane
take my car, my front axles have a standard cv join on the inside, same as the outside. according to audi, they shouldn't exist on my car in the USA, but a select number during the split year (2002) were built with EU spec parts due to not having the USA spec parts from the manufacturer soon enough.
fast forward, now when i look i cant find parts for that axle, and im pretty much SOL when the inner goes as while the cv joint can be replaced with a standard part, the retaining clips are not being sold in the USA anymore and i cant source them from germany.
long story short, sometimes audi does crap behinds the scenes and it pisses everyone off, my advice would ne to get ETKA ASAP. its the only thing that keeps me somewhat sane
Thread Starter
Audiworld Junior Member
Joined: Jul 2012
Posts: 13
Likes: 0
Ok this is straight from Jim Ellis Audi Parts website.
This is what you have and took off the car:
Brake disc (ventilated) .
PR-1LA,1LD. 320X30 5/112. VENTILATED DISC. BRAKE ROTER. ROTER.
Stock Code 8E0615301AD ; 8D0-615-301-K; 8D0-615-301-M; 8D0615301K; 8D0615301M
Manufacturer Audi
Categories Wheels and Brakes
And then this what shows with your PR Code 1LX
VENTILATED DISC. BRAKE ROTER. ROTER.
Stock Code 4B3615301
Manufacturer Audi
Categories Wheels and Brakes
Assemblies Floating caliper floating caliper brake disc (ventilated) front front ((A6) Audi A6/Avant
321X30MM 5/112.
(1LX) Brake type, front: Disc brakes, front.
(T7S) 4.2L.
(A6Q) Audi A6/S6 quattro
321X30MM 5/112.
PR-T7S.)
What's odd here is the "your" original rotor part #8D0615301M that was removed from the car does not even list on the second example with an 1LX pr code with a 4B3615301 part number, notice the pr codes.
Your offset math confuses me because the side view dimensions are 1) overall height, 2) rotor thickness, 3) hat height, So lets assume that when you minus 1 and 2 this should be the offset or hat height.
So here is my point and what I really think is going on here, the rotors that you pulled of the car were not the right ones from the start and some one turned them down for clearance, the 4B3615301 or Bendix PRT5555 listed for the 1LX pr code has a offset of 23.4mm by my math with a taller hat setting it back were you need it, the one you got from blau and the dealership has an offset of 16.2mm being forward by 7.2mm were you don't need it.
This is what you have and took off the car:
Brake disc (ventilated) .
PR-1LA,1LD. 320X30 5/112. VENTILATED DISC. BRAKE ROTER. ROTER.
Stock Code 8E0615301AD ; 8D0-615-301-K; 8D0-615-301-M; 8D0615301K; 8D0615301M
Manufacturer Audi
Categories Wheels and Brakes
And then this what shows with your PR Code 1LX
VENTILATED DISC. BRAKE ROTER. ROTER.
Stock Code 4B3615301
Manufacturer Audi
Categories Wheels and Brakes
Assemblies Floating caliper floating caliper brake disc (ventilated) front front ((A6) Audi A6/Avant
321X30MM 5/112.
(1LX) Brake type, front: Disc brakes, front.
(T7S) 4.2L.
(A6Q) Audi A6/S6 quattro
321X30MM 5/112.
PR-T7S.)
What's odd here is the "your" original rotor part #8D0615301M that was removed from the car does not even list on the second example with an 1LX pr code with a 4B3615301 part number, notice the pr codes.
Your offset math confuses me because the side view dimensions are 1) overall height, 2) rotor thickness, 3) hat height, So lets assume that when you minus 1 and 2 this should be the offset or hat height.
So here is my point and what I really think is going on here, the rotors that you pulled of the car were not the right ones from the start and some one turned them down for clearance, the 4B3615301 or Bendix PRT5555 listed for the 1LX pr code has a offset of 23.4mm by my math with a taller hat setting it back were you need it, the one you got from blau and the dealership has an offset of 16.2mm being forward by 7.2mm were you don't need it.
Thread Starter
Audiworld Junior Member
Joined: Jul 2012
Posts: 13
Likes: 0
jcman seems to grasp my issue the best. Like I just discussed with him, the old rotor DOES NOT rub but is very close and since it has been turned down, that is likely the only reason it does. I thought you meant 321 but I have heard of a 312mm audi rotor so I wasnt sure.
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