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I recently purchased a 09 Turbo S. The main reason to get a cayenne was to take it to the dunes (Based in Dubai) and wanted something in which I don't have to do any engine mods hence the reason I got a Turbo S. To get maximum traction in the dunes means I have to lower the size of the rim and after doing a bit of research I realized on the Turbo S (Red Calipers) the lowest I can go on the rim size is 18". Well that was a mistake since I ordered a set of 18" Oz Rally Racing rims with the Eurowise wheel adapters and tried to mount them but the rims do not clear the caliper. Are my brakes bigger than the regular Turbo?. If I would like to install the rims I purchased do I downgrade them to GTS brakes or Cayenne S brakes?
If that is possible could you also let me know what and all parts are required for me to replace?
I have also attached a couple of pics of my problem below
You could try taking an angle grinder to the calipers and shaving off a few mm until the wheel spins freely. I have done this before on other vehicles and it worked fine. If you don't care about destroying the calipers it's worth a shot. Just don't go to low and rupture the caliper then it's completely destroyed.
You could try taking an angle grinder to the calipers and shaving off a few mm until the wheel spins freely. I have done this before on other vehicles and it worked fine. If you don't care about destroying the calipers it's worth a shot. Just don't go to low and rupture the caliper then it's completely destroyed.
Bad idea all the way around regarding modifying the calipers with a grinder.
The 2009 TTS has much larger 380mm front discs. You can go with a 19 inch rim, but the clearance is tight. A 20 is the best option for most applications other than the factory 21s.
Bad idea all the way around regarding modifying the calipers with a grinder.
The 2009 TTS has much larger 380mm front discs. You can go with a 19 inch rim, but the clearance is tight. A 20 is the best option for most applications other than the factory 21s.
Cheers,
Tom
I agree, try to get an OEM or aftermarket 20" rather than butchering the brakes. way mroe options for 20's rather than the 21s
You could try taking an angle grinder to the calipers and shaving off a few mm until the wheel spins freely. I have done this before on other vehicles and it worked fine. If you don't care about destroying the calipers it's worth a shot. Just don't go to low and rupture the caliper then it's completely destroyed.
At first, I honestly thought of doing this but I was afraid of doing more damage than good
I agree, try to get an OEM or aftermarket 20" rather than butchering the brakes. way mroe options for 20's rather than the 21s
Since I already purchased the rims I would really like to stick with 18s plus for the intended purpose the 18s would work really well compared to the 20's
It does work, it's just a little bit greasy, and definitely a backyard hack job. I suggested it because you want the smaller wheels for the sand dunes, and it sounds like your open to the idea of replacing brakes. It's hard to tell how much clearance you need from the pictures.
It's not the correct way, but it's faster and cheaper, and with that being said it carries risk. There is a lot of pressure built up in those calipers under braking use and they are more prone to failing if you removed too much metal.
Do you by chance have any part numbers as a reference?
IIRC, there have been a couple of members here who have "downgraded" to the smaller turbo brakes. I cannot recall which threads reference their experiences though. @Petza914 is the guy to check in with- he went the other way and upgraded to PCCBs!
IIRC, there have been a couple of members here who have "downgraded" to the smaller turbo brakes. I cannot recall which threads reference their experiences though. @Petza914 is the guy to check in with- he went the other way and upgraded to PCCBs!
Cheers,
Tom
I only know about the specific project I did which was a lot of work.
In my Misha Widebody Turbo S build thread there are photos with the bolt spacing for both the side caliper mounting bolts into the wheel carrier and for the top caliper mounting bolts into the adapter.
If someone can provide those same dimensions from normal Turbo front caliper, you'll be able to determine if you can just buy regular turbo calipers and rotors to downsize the front brakes, which I would guess is all you'd need to do and that they'll bolt up to the Turbo S uprights.
10-02-2021, 04:54 PM
New to me Turbo S Owner
