Quote:
Originally Posted by alefustec
Okay, so I have found some wheels in the right price range and look, have also read all the posts etc on this so now understand rolling diameters, et, and so on......but just want to check my maths;
I currently have the OEM Avus 18" rims with a 245/45 tyre. Now I belive the et is 45 and they are 8J (couldn't pin down anywhere if they were in fact 8.5J???).
Anyway the wheels I have found are 19" (just couldn't find any 20's!!) but are 9.5J (mmm nice and wide  ) with an et of 35.
So.....if the current wheels are et45 this means the new ones at et35 will sit 10mm further out, now here is the tricky part as they are at least 1" (or possible 1.5") wider does that have to be added onto my calculations to work out how far out they will sit????  .
if so, I get 10mm + 25mm = 35mm (@1" wider rim) or;
10mm + 38mm = 48mm (@1.5" wider rim)
I think I have about 50mm at the rear to play with before they come out too far from under the arches (and nearer 80mm at the front). Looking through the threads I have seen that at least someone is running 10" rims at the rear so it can be done, although the et may be 45 or more which is why they fit. Unfortuntaley, if I order them there is no going back as I can't return the wheels back to the UK....the deal is that if I buy and they don't fit its tough, hence the need for some reassurance! |
The wheels will fit fine. I am running 20 x 8.5J et 45 with 15mm spacers
making my final et 30. Which size tyres do you intend to run?
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Conan (the Librarian)
Watch it if you dare
Currently,
2000 S8, Merlin Purple, Leather Pack 1, Winter Pack 1, SPAX adjustable suspension, AP Racing 6 pot front caliper, 385mm fully floating disks, EBC Yellow Stuff Pads, Black Diamond grooved rear disks and predetor pads, D2 Doctors Brake Block.
1997 4.2 A8SQ - the Projekt. 12 years and ongoing!
1997 4.2 A8SQ - Ming Blue. Restoration sat waiting; saved from the Scrapyard
2003 C5 Allroad 4.2Q - Cobolt Blue. Towing car. Laid up awaiting manual conversion.
2005 C5 Allroad 2.5TDi FE - Grey - Workhorse.
2015 Q3QS SLine - Daytona Grey. Lots of extras! Long Haired Admirals cutter.
Previously
2003 C5 A6 1.9TDI FWD - Loaner from D2 Doctor Lifex
1997 S8 - Ming Blue. Loaned out and written off. I loved that car. My first engine swap after cambelt failure.
1996 4.2 A8SQ - Ming Blue. 178k on a cambelt! Trader's 8. Delivered to A8Parts at Lifex.
2003 2.8 A8SQ - powder blueish. Fill in for a while. Sold on.
1998 1.8T A4 Avant FWD. Ming Blue (there's a theme here), PEX for the 97 S8.
And a list of non VAG going back 40 years before I saw the light. 
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