Offset for 3.2 Carrera with 7x15 wheel

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MonkeyChap
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Offset for 3.2 Carrera with 7x15 wheel

Post by MonkeyChap »

Hello

I need new rims for my winter tyres - turns out the offsets are wrong on 7" cookies for 3.2 rear axles, and cookies don't like hub-centric spacers. Does anyone know what the best ET offset would be for a 7x15 on the rear so that the tyre (205) fills the arch properly ? The arch isn't rolled, so I don't want to risk any rubbing.

I'll probably replace the front cookies too, so if anyone knows the correct 7" offset for the front, that would be much appreciated.

Ta

Ian
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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by Lightweight_911 »

.

There were only 2 offsets avaialble on original Porsche 911 7x15in wheels:

Early '7R' Fuchs = 49mm

All other 7x15in (Fuchs, Cookie Cutters) = 23.3mm


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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by MonkeyChap »

Thanks Andy - so for the rears I need to be putting some 7x15 ET49 offset wheels on ?
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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by Lightweight_911 »

No Ian - they have the extra 1" width on the inside compared to a 6in wheel.

For an RS/SC/3.2 Carrera, etc you'd want an 8 x 15in wheel (Fuchs has an ET of 10.8mm)


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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by MonkeyChap »

Ah - 8" might be a bit of a stretch for a 205 tyre, and I don't think you can get wider snow tyres in 15". Do you know if there are any after-market 7" wheels (e.g. minilite copies) that fit a 3.2 rear wheelarch ?
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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by KS »

If it's only for winter use, why don't you simply use regular 7s with spacers if you want to fill out the arches?
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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by MonkeyChap »

Hi Keith - I tried that. Unfortunately the cookie cutters don't have the necessary recesses to allow a hub-centric spacer to be used - I went right up to a 28mm spacer and the nuts protruded about 5mm outside the space and so the wheel wouldn't sit properly. A 32mm was the next size up but I think that would have rubbed on the wheel arch.
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Re: Offset for 3.2 Carrera with 7x15 wheel

Post by Jonny Hart »

I ran 7 x 15 cookies on my SC. I used adapters, rather than spacers on the back (26mm I think). All good.
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