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Looking at some new wheels they are 18s with 9j and the et runs from 35-45 will I get away with 9j running et45 or will that rub?
 

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This site should give you a good idea :thumbsup:

Haven't put the measurements in but think you'll struggle with that offset
 

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You can get a 9j to fit but iirc it needs to be an offset closer to standard. Think people running comps are running a 9j but the offset is et50. I'm sure someone with that wheel will confirm for you.

I'm running an 8.5 wheel with an et45. Black wheels don't photograph very well but hopefully this gives you an idea of that looks

A0631EC6-FACC-4B6B-A289-8F1E77F8FB53.jpg

6B566600-2948-40D4-8A19-B8EC9EDED74F.jpg
 

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I had 9"x20" ET50 with 245/30/20, and ET45 would be fine, but will depend on what tyre size you will run?

If you will run 9x18 ET45 with 245/40/18 then this is the same as the standard rims with 20mm spacers, and we know this works fine?

This is a good site for working out clearances and seeing how different combo's will suite the car?..

http://www.wheel-size.com/calc/?wheel1=235-35-19X8.5ET60&wheel2=245-40-18X9ET45&fcl=25mm&wcl=40mm&scl=40mm
Ill probably have to change the tyres from the wheels I have on the RS at the moment 225/40/18 Otherwise I'll get stretched tyre I guess
 
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