Sounds like they have been changed before.

 

has anyone heard of 27mm rotor thickness rotors for the touareg? Its pretty puzzling. unless it is a OEM rotor thickness, but is thicker on the aftermarket versions.

 

The rears are thinner than the fronts. I believe new 28 mm (or 30 mm)

 

Yes, thats what I thought, but the rears are not directional, and these that I pulled off are. any ideas what I pulled off? 27mm, directional, 330mm diameter! ???????

 

Sounds like your friend's truck had an improper brake job before where they cut the rotors down then pad slapped the job, resulting in a too thin rotor for the second time around.

There would not be an alternative rotor to install. New is 32 mm, that's it. Rear is 28 mm, with a flaring hat to accommodate the parking brake drum inside.

 

so, you are saying, they turned the rotors, which were below 30mm at the time and they dug in another few mm to where I found them? that would be a real stretch for a shop to turn rotors that worn, near 27mm, dont you think? are you sure there are not any other 330mm rotors that would be 28mm that are directional??

I dont think they are rear rotors, though the thickness of the lip, which doesnt see pad wear would indicate this. they dont have a parking brake surface, and they are directional. I havent seen the tourareg since I did the brake job, but certainly I will have my micrometer in hand to measure what I put on. I think you are right. they will probalby be 32mm as spec.

its a mystery!

thanks

Sounds like your friend's truck had an improper brake job before where they cut the rotors down then pad slapped the job, resulting in a too thin rotor for the second time around.

There would not be an alternative rotor to install. New is 32 mm, that's it. Rear is 28 mm, with a flaring hat to accommodate the parking brake drum inside.

 

I just measured them again. they are 26.5mm at the lip (where the pads dont touch) and they are worn near 3mm. so actually, they are now, 23.5mm!!!
From the look of the vents, they dont look like other 32mm thickness rotors. Is it possible there is another rotor available for the cayanne or VW touareg that is thinner? I cant imagine some shop turning down a 26.5mm rotor, 3.5mm below legal minimum thickness.

 

I don't think anyone knows what you have on there...its not like there are a pile of manufacturers making brake parts for these things. Nobody has ever posted about any brake parts coming in thinner than stock size. Most likely scenario is someone turned the rotors and now they are wafer thin.

I don't think any other brake rotor made for another vehicle would fit on there, unless for some oddball reason some other Porsche 5x130 rotor happens to fit exactly the same over the hub (unlikely...but possible I suppose). Porsche is the only one using 5x130 pattern...

 

I'm going to stand by my previous statement: someone ignored the statutes and this is the net result.

How about a picture from an end on view? I'd like to see the plates in relation to the central vent.

Directional rotors are actual quite unusual in the overall population of rotors on vehicles. Germans use it more than others, though, I still don't think someone found a substitute that fit precisely in place of the correct part.

 

Thanks. I just dont know, as I'm a porsche guy and can attest to the rotor uniqueness, but the cross over to the VW stuff, due to their engineering relationship and use of similar parts. I do know all the porsche guys know about the 350mm rotors on the touareg also, as they can get them cheaper when they are for a VW, and not buy them from porsche for their GT3.

Ill post a picture. I think its pretty wild that someone could do something like that. this means he got the rotor at 3mm below minimum and then the rotors wore another 3mm to a final thickness of 23mm! thats just crazy. Ill get a picture and let me know what you think.

Glad to know that the correct rotors are 32mm, and there are no question or options otherwise. thanks for that information.

I'm going to stand by my previous statement: someone ignored the statutes and this is the net result.

How about a picture from an end on view? I'd like to see the plates in relation to the central vent.

Directional rotors are actual quite unusual in the overall population of rotors on vehicles. Germans use it more than others, though, I still don't think someone found a substitute that fit precisely in place of the correct part.

 

Here is the 330mm tourareg rotor i pulled off, next to a porsche rotor from a GTS or 911 turbo. (322mm) just for reference. those are also 32mm thick. the porsche rotor is on the right and the VW rotor is on the left and it is rusty.

you can see the digital caliper on it. its reading 26.5mm at the lip, and the wear is 1.5mm per side, so the rotor face thickness is now 23.5mm.

 

turn the two rotors over flat side down



So if you orient the two rotors flat side down, then you can eliminate the hub offset as an issue in your picture, and try to show the difference between the two discs, under the assumption that they are both 32mm nominal new. Try to measure the depth of each lip carefully? It definitely looks like its deep...1.5mm would/should equate to 1.5 sets of brake pads use, how many total miles on this rig? Was the previous owner, how do you say, a driver of casual or aggressive distinctions?

What is the overall height of the sample Touareg rotor, by the way? Measure thru the center hole down to the table top while seated on its disc face. The height is to the level top from the table face.

I'd love to get this part in my hands... but anyway, can you read any details off the rotor, any markings or OE info, or aftermarket info...?

 

sorry, a few posts ago. I meant, the porsche rotor is on the left and the VW rotor is the rusty one on the RIGHT! (But you probably figured that out.)

 

Ok, so the correct 32mm Touareg rotor is 68.5mm in overall height. You are demonstrating 65-66mm? That would be a differential of 5-7mm in disc height, maybe?

The center hole should be 85mm. There should be 5 bolt holes and one accessory hole.

There is no other listed unit with a 68.5 height and the 330mm diameter and the 5+1 config.

What do you find?

 

My guess is she did the pads 3 times and never changed the rotors...somebody turned the rotors at one point. (just a total guess here...).

On the rust issue, all brake rotors will rust unless they have some sort of protective coating...raw steel of even the highest quality will rust upon exposure to air. F

 

dont those vents look too small for it to be a 32mm rotor originally?

 

I'm with you on this one.... The actual vent holes look smaller. Any way you can measure the height of the opening (or the thickness of the rotor material on both sides)?

Pictures can certainly be deceiving, but it looks like the vents are smaller, while the thickness of the rotor material (on both sides) seems to be pretty close in width....

 

Could be someone threw a set of R5 rotors on there for some reason. I don't know the rotor size, but I do know they are different from the rest of the Tregs.

That's just strange......

Anyways, glad you got them off and swapped out....

 

yep, and she wanted really badly to just do pads again!! can you believe it??? they were at 23mm when mins are supposed to be at 30mm!

anyway, what is an R5 rotor?

Could be someone threw a set of R5 rotors on there for some reason. I don't know the rotor size, but I do know they are different from the rest of the Tregs.

That's just strange......

Anyways, glad you got them off and swapped out....

 

Found it!

1KE - 314x22 rotors with single piston floating caliper, R5 model. Made by TEVES.

I'm guessing this is what was on there.....

R5 is another model of Touareg - not sold in the US or Canada. Basically a less expensive model made with parts from the VW parts bin (to make it less expensive).

They are VERY popular in Australia, and there are a number of them in the UK too.

Don't mistake less expensive for cheaper - they are still great rides, and tough as hell.

 

Got it, thanks!

But, i dont think that is it, because it has to be directional, and these might be, BUT, the 22mm number is off from what Ive seen. for sure, it started out greater than 27mm, had probably been turned before because its not 28mm, and now has ended up at a surface contact area of 23.5mm.

Found it!

1KE - 314x22 rotors with single piston floating caliper, R5 model. Made by TEVES.

I'm guessing this is what was on there.....

R5 is another model of Touareg - not sold in the US or Canada. Basically a less expensive model made with parts from the VW parts bin (to make it less expensive).

They are VERY popular in Australia, and there are a number of them in the UK too.

Don't mistake less expensive for cheaper - they are still great rides, and tough as hell.

 

I don't even think we could get the R5 rotors in the United States. Geoff would know much better than I.

 

I just saw the car with the new rotors on it. the replacements were obviously 32mm.

Now, the interesting part. she said she has never changed rotors since she bought the car in 2005, but you guys are right. 3 pad changes. Now the weird part. how did the outer edge go from 32mm to 26.5mm. wouldnt there be a huge lip, showing the old 32mm wide thickness?

 

This is what happens when people ignore standards and drive off into blissful ignorance, trailing the flotsam and jetsam of their lives, er, whatever negative affects they may happen to pickup along the way, like taking in strays, sort of?? Bedding down homeless people? Allowing the dragoons safe harbor for...ever? Well, as absurd as all of that drivel may be, that's what your ex touareg owner is capable of, or or accomplished. No standards to honor, no safe conduct to protect her. One major brake situation, and those rotors could well have shattered in overheating. The mechanics who trimmed those parts should be approached by the authorities as there are federal statutes to observe!

(a pounding of the table ensues)

Stuff happens.

Geoff

 

Geoff, I think you spelt "stuff" wrong!!

 

The 2.5 five cylinder R5 wheel stud centres are a different pitch to the 3.0 so these are not R5 rotors [discs in the UK!].

The R5 used a VW Transporter van parts to keep costs down as it was the base model.

That's why, in the UK and Europe, people have to be careful when buying secondhand alloy wheels as there are 2 different pcds.

 

You can get a tool that takes off the burr on the edge of the disc [rotor] and trues up the disc without removing it. It's called an on car brake lathe.

Pro-Cut on-truck brake lathe & on-car brake lathes

Of course it would never cross your mind to charge your customer for new discs as well as pads! Would it?

 

can you guys measure the inside vent area to the beginning of the rotor surface on the inside? im measuring 14mm on the rotor I pulled off the car.
If you guys get 14mm, then it will be assumed that this rotor was just worn out and turned a few times well below minimum values. If not, we have some weird rotor, that nobody has seen. It seems like this rotor was the original that was fitted on the car from the start. as a note, the porsche rotor from a 911 turbo that was in the picture (322mm x 32mm) has a vent width of 16+mm, but it has clearly a different shape.