irwiny

I thinking of doing my brakes soon for the 08 TT with 368 mm x 36 mm
rotors and looking for some forum advise. The DIY shows the calipers having a opening to change the pads with out removing the caliper. The rear brakes looks to be possible but the front has me worried.

I'm hoping to avoid removing the caliper / replacing the rotors.

Any help or feedback would be greatly appreciated regarding doing a the front brakes on this enclosed caliper is appreciated.

geetee

the 08's suck in that aspect....its not brembo like any other year
you have to remove caliper for the pads sorry

mudman2

+1 but not to bad once you get over the fear

irwiny

Thanks for the above feedback ....

Does anyone know the size / type of bolts used in holding the calipers? I have a set of 3/8 size Torx but I'm feeling the need to visit Harbor Freight to get the 1/2 size impact set (T30-70) soon.

Also any advise regarding how active suspension (height {ex: lowest} / mode {ex: Sport}) needs to be set or depressurized so that the caliper can be remounted easily? I read that you hold the height adjustment for 15 seconds?


Thanks...

geetee

Set to highest setting and then hold the lever up 10 sec. it'll disable/lock the air sus so it won't move.
I forget with size the torx size was...it was a odd one.
make sure you have proper jacks....I tried with a 1.5ton jack it bent the jack and fell(luckily the wheels were still on). I use a 3 ton one but still just not comfortable jackin up the pig.....
unless you have a lift...then you're all set

westy66

I have an 08 as well with these dumb one year only brakes LOL I'll be doing brakes this winter, interested if any special tools are necessary

babaron

So I know how to slide the caliper off the rotor but now how do I get the pads out with this new style enclosed rotor??


Thanks,


Ron

deilenberger

Since I'm setting up to do this on my '11 - with 390mm rotors, and the same style calipers, some hints to make the job easier.

1. VW/Porsche made a set of "assembly pins" that screw in place of the retaining bolts on the radially mounted calipers. You remove one mounting bolt at a time - screw in the pin. After both are installed, and the brake lines/wiring unclipped from the spindle behind the caliper, you can slide the caliper up on the pins, and it sets into a recess in the pins and stays there., Makes it much easier to do the job.

At that point you leave the pads in, and use a pad-spreader to push the pads/pistons back into the caliper. You can then R&R the pads and the pad-warning sensor.

The only place I found the pins available (PN T10439) is vw.snapon.com - SnapOn apparently is the distributor for VW special tools. Cost is about $50 with shipping for a pair. They do turn up in a Google as available in Europe - but the cost and shipping to the US is more costly. I ordered a pair.

2. The mounting bolts for the calipers are ONE-TIME-USE. They are tightened to 104ft/lbs (140Nm) and apparently stretch when tightened. While people DO use them over - I'd rather not take the chance so I've ordered 4 replacements. You'll need a 1/2" torque wrench to tighten them. and the corresponding torx driver. Order these using your VIN# since the on-line catalogs are rather confusing - there are two different sizes and you want to get the right ones obviously.

It looks as if aside from size (390mm rotors are "yuge..") the Turbo brake systems are much the same.

BTW - Porsche STRONGLY warns against the use of an impact driver on the caliper mounting bolts - taking them out or putting them on. I imagine there is a reason for that warning.

MJG911

the bolts are actually 14mm triple square, not torx though.

deilenberger

MJG - good catch. You can tell I haven't done mine yet (and the bolts haven't arrived.) Happily I do have the triple-square set already.

tgavem

The 08 TT will have similar procedure to 2011 and newer

https://rennlist.com/forums/porsche-...cayenne-3.html

When you use the pins, turn wheel outward, easier to remove calipers.

deilenberger

Just got the bolts for my '11 CTT from Porsche - they're Torx. Checked what's in there now - it's Torx.

So - it might be triple-square, might be torx. Best to have both sets of drivers..

MJG911

Interesting.. my 2012 and my 2015 were triple square.

deilenberger

Were they Turbos? The bolt PN is different for the Turbo 958.. bigger and twice the price of the other ones.

MJG911

both diesels