Rotor/disc thickness

[Upnorth]

Hi all,

Anyone know the minimum thickness advised on rotor/discs on Cayenne S '04

Thnks

Mike

[Loren]

For the Cayenne S and Turbo

Brake disc thickness, new

front - 34 mm

rear - 28 mm

Brake discs minimum thickness

front - 32 mm

rear - 26 mm

Lateral runout of the brake disc, max. 0.03 mm

Lateral runout of the wheel hub, max. 0.01 mm

Lateral runout of the brake disc when installed, max. 0.06 mm

[Upnorth]

Thanks for, as usual, a comprehensive and complete reply.

[LVDell]

Loren, do those specs apply to the V6 as well or just the S?

[Loren]

Loren, do those specs apply to the V6 as well or just the S?

I got my cayenne manual in 2002 at introduction so it is not likely up to date with the newer Cayenne brakes.

Let me see if I can get a supplement or update...

[LVDell]

Thanks Loren! I'm in no rush as I won't be doing the brakes for a month or two anyway. Please post back if you find anything.

Cheers,

Dell

[Loren]

Thanks Loren! I'm in no rush as I won't be doing the brakes for a month or two anyway. Please post back if you find anything.

Cheers,

Dell

For the Cayenne V6

Brake disc thickness, new

front - 32 mm

rear - 28 mm

Minimum brake disc thickness after machining (see my note below)

front - 31.6 mm

rear - 27.6 mm

Brake discs minimum thickness

front - 30 mm

rear - 26 mm

Lateral runout of the brake disc, max. 0.03 mm

Lateral runout of the wheel hub, max. 0.01 mm

Lateral runout of the brake disc when installed, max. 0.06 mm

Note- What the "Minimum brake disc thickness after machining" number says to me is that you can't machine these discs. If you add to wear to the minimum number there is no room to machine them.

[LVDell]

Awesome Loren! Thanks for posting that up. Now I have a reason to go buy that digital micrometer that I have had my eye on :)

BTW, this may be a stupid question but that is "lateral runnout"?

Cheers,

Dell

[Loren]

I think Tool Pants posted a picture of the that measurement once before but I can't find it now.

Basically, it if you put your micrometer on a horizontal fixed point (like a jack stand or attach it to a suspension piece) so that it just touches the rotor. Then you slowly rotate the rotor -- the variation should be less than the spec above. So that is really rotor wobble. Some more sophisticated micrometers can measure both sides at the same time.

[LVDell]

That was my initial guess. Thanks for confrimation. Once again, many thanks!

Cheers,

Dell

[CheckbookMechanic]

Sorry to bump such an old topic back to the top but what is the minimum thickness of the brake rotors on an '06 Cayenne Turbo?

TIA,

Lane

[Loren]

Sorry to bump such an old topic back to the top but what is the minimum thickness of the brake rotors on an '06 Cayenne Turbo?

TIA,

Lane

Same as the Cayenne S (answered in post 2 here).

http://www.renntech.org/forums/index.php?s...ost&p=64125

[CheckbookMechanic]

Same as the Cayenne S (answered in post 2 here).

http://www.renntech.org/forums/index.php?s...ost&p=64125

Loren,

Thanks for the quick and helpful reply.

-Lane

[orthotist]

What are the mm size if the front rotor is 18ZL (350?) and rear rotors on a 2006 Cayenne Turbo? VIn# WP1AC29P96LA90598

Thanks in advance!

[Loren]

What are the mm size if the front rotor is 18ZL (350?) and rear rotors on a 2006 Cayenne Turbo? VIn# WP1AC29P96LA90598

Thanks in advance!

That VIN has the following options factory installed:

I1KZ -- Rear disc brakes - disc diameter 17 inches, brake caliper painted red

I1LM -- Front disc brake - disc diameter 18 inches, brake caliper painted red

[orthotist]

What are the mm size if the front rotor is 18ZL (350?) and rear rotors on a 2006 Cayenne Turbo? VIn# WP1AC29P96LA90598

Thanks in advance!

That VIN has the following options factory installed:

I1KZ -- Rear disc brakes - disc diameter 17 inches, brake caliper painted red

I1LM -- Front disc brake - disc diameter 18 inches, brake caliper painted red

[orthotist]

So, is that like 350mm for front and 330mm for rear or maybe something else?

[orthotist]

So I see 18ZL on left front and L on left rear. I see 18ZR on right front and R on right rear. I didn't 17 on the rears anywhere and I get the whole L and R on the calipers but I'm trying to find out if the MM because I haven't seen any 18" rotors listed as 457.2MM. Maybe I just have no clue what the hell I am doing, LOL. When searching to purchase some rotors the sites talk about 330mm, 350mm, 380mm. Just trying to make sure I order the correct sizes.

Thanks

[Loren]

So I see 18ZL on left front and L on left rear. I see 18ZR on right front and R on right rear. I didn't 17 on the rears anywhere and I get the whole L and R on the calipers but I'm trying to find out if the MM because I haven't seen any 18" rotors listed as 457.2MM. Maybe I just have no clue what the hell I am doing, LOL. When searching to purchase some rotors the sites talk about 330mm, 350mm, 380mm. Just trying to make sure I order the correct sizes.

Thanks

For your car:

350 mm fronts

330 mm rears

[orthotist]

So I see 18ZL on left front and L on left rear. I see 18ZR on right front and R on right rear. I didn't 17 on the rears anywhere and I get the whole L and R on the calipers but I'm trying to find out if the MM because I haven't seen any 18" rotors listed as 457.2MM. Maybe I just have no clue what the hell I am doing, LOL. When searching to purchase some rotors the sites talk about 330mm, 350mm, 380mm. Just trying to make sure I order the correct sizes.

Thanks

For your car:

350 mm fronts

330 mm rears

Perfect, thank you.