997.2 Upgrading rear rotors

[Nasdacbull]

All,
I have to change the rear rotor disks (330mm) of my 2010 997.2 4S cabriolet. The original ones are still on the car.
Is it possible to fit the 380mm (from the 997.2 turbo) rear rotor disks from the 997.2 4S directly ? Are there kits that exist ?
I am also looking for recommendations of the brand names I should use for the rear rotors: OEM, Bremo. Pagid or Sebro ?
Are they all as good as one other ?
If you have fitted these brakes to your car instead of OEM, what has been your experience ?
Thanks

 

[Lancerlot]

If you decide to fit larger discs, you will obviously need to fit larger callipers too. You will then need to think about the wheel rim clearance, diameter, offset etc.

If you manage to do this successfully, there will be a front/rear brake imbalance needing to be addressed and will probably end up having to replace front brakes too.

All in all, it's advisable to talk to an expert about brake upgrades before you set off on this journey.
Otherwise just replace with stock discs from your PC - you can get 10% discount with your PCGB membership, will have peace of mind and won't jeopardise any extended warranty.

Sorry if I always seem to be pouring cold water on all your vehicle upgrade ambitions! []

Regards,

Clive

 

[STiG911]

Firstly, I'm pretty certain that the rear discs from a 997 turbo are 350mm, not 380mm, which are found on the front.

Secondly, don't discount the effect of replacing the standard brakes with new, model-correct items, particularly if you're doing a brake fluid flush at the same time.

Unless you're a full-on hardcore track driver, you'll get no benefit whatsoever from having bigger discs on the back. You'd be better investing in replacement discs with a slightly harder pad compound, if you're convinced you need 'more', before going down the upgrade route. The front brakes in particular on my 997C2s were very much past their best when i changed them three years ago, and the difference is stark - particularly when you've got some heat into them. One thing any 911 never is, is under braked, even as standard.

 

[Motorhead]

Some excellent advice there Robert. Just to add that according to journalist, racing driver and Porsche expert Paul Frère in his book "Porsche Boxster Story", the brakes ... have been developed to meet the requirements of the standard Porsche Brake Test. This consists of 25 consecutive retardations with a deceleration of 0.8g from 90% of the car's maximum speed down to 100kph from where the car is immediately re-accelerated as quickly as possible , using the gearbox, to 90% of its maximum speed, and so forth. During the entire test procedure the deceleration must never fall below 0.8g and the temperature of the discs must never exceed 700 deg-C.[/i]

That procedure applied for the 986/996 series cars and I believe was derived based upon race car requirements at the time; I'm sure that it's still in place today, maybe in a slightly modified form. The point being that you can be sure that the standard brakes on your 997.2 are more than likely perfectly adequate for your requirements, even if you take the car on track.

Jeff

 

[Nasdacbull]

Clive, Stig911 and Jeff,
Thank you all for your replies and I will be sticking to the original spec.
Clive, could I suggest that these replies in the FAQs. I am sure I am not the only one out them who has this question in mind.
Thanks