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Nicoc4s
Trainee


Joined: 23 Feb 2018
Posts: 57



PostPosted: Fri Sep 14, 2018 4:05 pm    Post subject: 994 4s wheel question Reply with quote

Guys can a 10j rear wheel go on a 996 4s? Im current setup has 11j rears. I can alwys bring the wheel out with spacers if needed
 
  
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HSC911
Zolder


Joined: 23 Jul 2014
Posts: 5563
Location: Bedford


PostPosted: Fri Sep 14, 2018 9:35 pm    Post subject: Reply with quote

Why are you asking Dont know

What is the issue Question

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cableguy
Kyalami


Joined: 10 Sep 2007
Posts: 1753
Location: North Yorkshire


PostPosted: Fri Sep 14, 2018 9:41 pm    Post subject: Reply with quote

Of course. Just take into account the 12mm loss on the inside and outside of the wheel and add a spacer if required to match the desired offset.

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Phil 997
Brands Hatch
Brands Hatch


Joined: 05 Dec 2015
Posts: 14429
Location: Bournemouth,Dorset

2009 Porsche 997 Carrera 4S

PostPosted: Fri Sep 14, 2018 9:45 pm    Post subject: Reply with quote

Apart from not knowing what a 994 4S is Dont know Question and assume its a typo and you meant 996, but as long as the offset is the same you should be ok re the alloy but with the AWD if you change the tyre width at the rear you need to change the front as well or is may mess up the AWD system, so are you going to fit the same size tyres to the 10" as the 11" in which case your ok but if not then consider what your going to do with the fronts . I looked at changing my 4S rears to 325 from 305 but in order to not mess the AWD up I would have also had to change the fronts from 235 to 245 . hope that helps Thumb
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cableguy
Kyalami


Joined: 10 Sep 2007
Posts: 1753
Location: North Yorkshire


PostPosted: Fri Sep 14, 2018 9:56 pm    Post subject: Reply with quote

With the 4WD system, as long as you keep the rolling radius near front & rear OEM spec then all should be fine. Potentially you could fit 20" rims by adjusting the tyre profile to compensate. Sure it would probably be running a 20 or 25 series profile tyre and the ride would rattle your fillings but it is achievable.

Plenty of tyre profile calculators on the web if you have a look. Wink

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Griffter
Monza


Joined: 22 May 2016
Posts: 216



PostPosted: Sat Sep 15, 2018 7:20 am    Post subject: Reply with quote

If you fit a narrower wheel of the standard offset with a spacer, you’ll move the centre of the tyre contact patch out. That may have implications for handling. It might fit, but it might not work very well, especially if the tyre is narrower as well.
 
  
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Nicoc4s
Trainee


Joined: 23 Feb 2018
Posts: 57



PostPosted: Sat Sep 15, 2018 9:14 am    Post subject: Reply with quote

Thanks for the response guys nd yes did mean to type 996.
I will be keepig OEM Porsche tyre spec but if i do go wider i would replce front and back to keep the same.
 
  
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