Quick ET Question....

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ReVolvoLution
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Quick ET Question....

Post by ReVolvoLution » Thu Feb 02, 2006 4:56 pm

No I dont mean the little brown, wrinkly, short arse from another planet but more the Alloy Wheel fittment sort of ET or offset...

Which way round does it work? Is it.... the higher the number the further they hang out from the arch/hub (38 for example) or is it the lower the number (32) that sits them out further?

Anyone running aftermarket alloys? Whats the highest (or lowest) offset you can get away with to get them further out? I love my standard 14's but they just seem hiden away under the car considering the front wings are so flared.

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Post by catgroom » Thu Feb 02, 2006 10:27 pm

The first guess mate.

The bigger the ET number the bigger the hub hole.

The 480 fitment is ET 35-38.

Its the size of the lip that your centre hole on the alloy has to seat around.

So,its a lip and hole scenario.

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Post by DaKyy » Fri Feb 03, 2006 8:44 am

Well, umm, dunno what catgroom over there explains... But here's some sort of explanation
http://www.topbuzz.co.uk/info/offset/offset.htm

For example, My Cetus has an offset(ET) of about 35. If I fit allooys with offset of 40, they'll go 5mm further inside the wheel arch. And with offset of 30, they'll come 5mm out.

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Post by robkendall » Fri Feb 03, 2006 11:02 am

yeah, steve, your having a mad moment i think, and talking about cb (centre bore)
basically, if its bigger than the volvo cb, then you can get spigot rings to make the hole smaller.

et is also sometimes refered to as offset

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Post by volviz » Fri Feb 03, 2006 11:14 am

Thinking about 17".... with what ET to look for... on '89 Turbo, if the plan is to lower a bit... should I go ET -30 or stay with ET -35 ?
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Post by ReVolvoLution » Fri Feb 03, 2006 2:31 pm

Groomz you crazy son biaatch thats C/B or Centre Bore matey!

I'm thinking of going for a minimal drop of 20mm front and back with a nice set of 16's but want to get the offset correct. I want them sitting slightly further out than standard but I dont want them catching the arches.

32 is the lowest offset recommended for the 480 (38 the highest) but some wheel specialists (leigh tyres mentioned and linked to in other posts) say 5mm either side of recommened ET can normally be achived?!?!?!?!

So would going for an offset of 30 on a set of 16's be a bit ambittious with only a 20mm drop or do you guys think it would be ok? I know theres a lot of other vairables... wheel width and tyre hight but lets assume a 6.5width with a 205 profile.

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Post by catgroom » Fri Feb 03, 2006 3:41 pm

Groomy's a wanker!!!!!!! :rofl:
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