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Glen, they are definately different between my 4S and TT, ill post a pic to show you.
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Lets put this to bed, even though it is well off topic!
The article in this months PCGB magazine - 'Post'- is regarding the 993 'Turbo Look' wheels...and the differences between the hollow spoke 'Turbo' wheels and the non hollow spoke C4S versions.
This is 993 specific, and is printed in the 993 Register section.
I spent some time reading through the official Porsche parts system (PET) disc last night, which is current for 2005 (includes 997 etc)
On the 996, the Turbo wheels are referred to as 'Turbo Look 2' in order to differentiate them from the 993 style 'Turbo Look' wheels.
2004 996 Turbo wheels have a bright silver finish (Arctic Silver) and have option code 416.
They are:
Front - 8" x 18", ET50, P/No 996 362 136 02
Rear - 11" x 18", ET45, P/No 996 362 142 02
2004 C4S wheels have a bright silver finish (Arctic Silver) and also have option code 416.
They are also:
Front - 8" x 18", ET50, P/No 996 362 136 02
Rear - 11" x 18", ET45, P/No 996 362 142 02
Same wheels....
Earlier C4S wheels (up to 2004) had the same front wheels, but a 10" wide rear. These appear to be option code 415.
These were 10" x 18", ET47.
The Turbo rears have always been 11" wide (from what I can see)...but the finish (and hence the last two digits of the part number) have changed.
To add weight to this:
Listed under the 'Wheel Sets' section is this:
Wheel Set for 2004 Turbo/C4S
000 044 600 88
Again...both cars share the same front and rear wheels...on 2004 and later cars.
Then there's these from the Tequipment range:
2004- GT3 Style wheels for Turbo/C4S
Bright silver finish (Arctic Silver)
Front - 8" x 18", ET50
Rear - 11" x 18", ET63
...there's also a 'Spacer Kit' listed for use on the rear of this wheel kit. Presumably, this is the GT3 Style set I have...I'll have to check for spacers!
The difference between your current 'Turbo Look 2's and your previous 'Turbo Look 2's must have been the difference between 10" wide and 11" wider rears...and possibly the silver finish.
...I know...I'm sad. I can live with that! /ubbthreads/images/graemlins/grin.gif
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Thats not sad, spending 6 hours washing a car then trying to go the long way home to possibly avoid the rain is sad! /ubbthreads/images/graemlins/grin.gif
My rear wheels on the 4S must have been 10's then. What threw me was that the rear tyres are the same size on the TT and my ex 4S.
I haven't seen the magazine artile on the 993's, i think ill have a look anyway.
Back on topic,
Glad you seen the benefit too jojo, id just always assumed tyre pressures would not make much difference.
