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please explain et to me

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Old Oct 12, 2007 | 09:30 PM
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mal28
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Default please explain et to me
I see wheels advertised as "Sizes 18x8 et50mm, 18x10 et47/65mm"

what does et mean?
Is this the correct size for a 997s?

thanks
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Old Oct 12, 2007 | 09:37 PM
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Originally Posted by mal28
I see wheels advertised as "Sizes 18x8 et50mm, 18x10 et47/65mm"

what does et mean?
Is this the correct size for a 997s?

thanks
Not sure what et stands for but it is the wheel offset in mm. Best to go to one of the tire websites. Try here http://www.1010tires.com/tech.asp?type=wheels

It's important to get the offset correct for both inside clearance and outside.
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Old Oct 12, 2007 | 09:39 PM
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From: Austin
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Originally Posted by mal28
I see wheels advertised as "Sizes 18x8 et50mm, 18x10 et47/65mm"

what does et mean?
Is this the correct size for a 997s?

thanks
For a C2 the OEM 997 18 inch wheels are 8x18 et 57mm front and 10x18 et 58mm rear.
For a C4 only the rear et changes from 58mm to 51mm.
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Old Oct 12, 2007 | 10:10 PM
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ET comes from the German word Einpresstiefe meaning offset (according to the quick search I just did!): http://en.wikipedia.org/wiki/Offset_(wheel)
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Old Oct 12, 2007 | 10:41 PM
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Originally Posted by jhbrennan
For a C2 the OEM 997 18 inch wheels are 8x18 et 57mm front and 10x18 et 58mm rear.
For a C4 only the rear et changes from 58mm to 51mm.
And I believe the rim width for the C4 goes from 10" to 11"
Widebody S or turbo models go to 19 x 11 with ET also 51
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Old Oct 13, 2007 | 08:20 AM
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From: Austin
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Originally Posted by Sharptt
And I believe the rim width for the C4 goes from 10" to 11"
Widebody S or turbo models go to 19 x 11 with ET also 51
Correct
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