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  1. #1
    hatmeow's Avatar
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    Wheels and Offsets (Pics)

    Guys,

    Something i couldn't quite figure out and need your help.

    I have a set of RS4 reps for my A3 with ET43 offset. However, when I installed my Cayenne 6 pot calipers the wheel needed much more clearance and I had to use 10mm spacers to make everything work again.

    Does that mean I can go for wheels with offsets that are ET33? Is ET43 + 10mm spacer the same as ET33 or are there other things that are different?

    I am in the market for new wheels and would appreciate if you guys can give me some pointers.

    Thanks!
    A3 2.0T Sportback DSG.

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    Brakes and Suspension:
    Brembo 6 pot w/ 345mm slotted disks, TT front suspension, HPA Coliovers, OZ Palladio, 225/40/18 BS RE001

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    S3 Front, Pedals, & Mirrors, 09 SB Skirts & LED Rear Lights, Original HID retrofit, Oettinger Roof Spoiler. Defi Turbo Guage, FBMFSW

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  3. #2
    Tommy's Avatar
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    Those are massive!!!!

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    ET33 will stick out MILES!!!! I have a set of 19" ET41 and they stick out a fair old wack so ET33 will be insane pokage!!!!!!!!
    Audi A3 2.0TDI S-Line
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    N8
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    Quote Originally Posted by Tommy View Post
    Those are massive!!!!
    They are my cousin has the same kit on his TT. Did you pay about 1500 fitted for those boss? Porsche would have looked better than the Audi rings.


    "Will these wheel fit my car PM's will not be replied to, do you research & use the SEARCH button"

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    10blazin's Avatar
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    wow those breaks look great lol mahussive i want em ....

    Quote Originally Posted by hatmeow View Post
    Guys,

    Something i couldn't quite figure out and need your help.

    I have a set of RS4 reps for my A3 with ET43 offset. However, when I installed my Cayenne 6 pot calipers the wheel needed much more clearance and I had to use 10mm spacers to make everything work again.

    Does that mean I can go for wheels with offsets that are ET33? Is ET43 + 10mm spacer the same as ET33 or are there other things that are different?

    I am in the market for new wheels and would appreciate if you guys can give me some pointers.

    Thanks!

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    Calliper clearance has very little to do with the offset of the wheels. The design is much more important. (Speak to anyone witha Leon Cupra R)

    Unfortunately the cheap replicas are the problem, they are designed for normal cars with normal brakes!

    Top aftermarket wheels from MTM, Speedline, BBS, Compomotive will all fit as they are deisgned for track cars.
    B6 1.8T Avant s line gmbh

  8. #7
    hatmeow's Avatar
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    Thanks for the comments on the brakes... they look super and stop on a dime, I luv them!

    Nathan, I am thinking of changing the logo to a Porsche one as the original intention was to be super low key... Now it looks a bit too low key after 1 year.... Still debating..

    Back to the old question. I have the 10mm spacers on the ET43 right now ans its just flush with the wing. No rubs... perfect. However is this ET43 + 10mm spacer set up equal to an ET33 rim? if its the same does that mean I can buy rims with ET33?
    A3 2.0T Sportback DSG.

    Engine / Trans:
    K04, Unitronic Stg II+ & DSG Stg II, S3 Injectors and Intercooler, APR F/Pump. BSH Intake, Forge DV, Oettinger Turbo Outlet, Eurojet throttle pipe, Milltek TBE. SP Meth Injection.

    Brakes and Suspension:
    Brembo 6 pot w/ 345mm slotted disks, TT front suspension, HPA Coliovers, OZ Palladio, 225/40/18 BS RE001

    Others:
    S3 Front, Pedals, & Mirrors, 09 SB Skirts & LED Rear Lights, Original HID retrofit, Oettinger Roof Spoiler. Defi Turbo Guage, FBMFSW

  9. #8
    hatmeow's Avatar
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    Quote Originally Posted by N8KOW View Post
    They are my cousin has the same kit on his TT. Did you pay about 1500 fitted for those boss? Porsche would have looked better than the Audi rings.

    Just under 1300. Got them brand new but cheap!!
    A3 2.0T Sportback DSG.

    Engine / Trans:
    K04, Unitronic Stg II+ & DSG Stg II, S3 Injectors and Intercooler, APR F/Pump. BSH Intake, Forge DV, Oettinger Turbo Outlet, Eurojet throttle pipe, Milltek TBE. SP Meth Injection.

    Brakes and Suspension:
    Brembo 6 pot w/ 345mm slotted disks, TT front suspension, HPA Coliovers, OZ Palladio, 225/40/18 BS RE001

    Others:
    S3 Front, Pedals, & Mirrors, 09 SB Skirts & LED Rear Lights, Original HID retrofit, Oettinger Roof Spoiler. Defi Turbo Guage, FBMFSW

  10. #9
    Clivesportback's Avatar
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    nice mate, any more pics of the car?
    A3 Sportback 140 on 18's S3 alloys

  11. #10
    kaz219's Avatar
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    Hatmeow - have you got any pics fm the side to see how much the wheel sticks out.

    But judging by Mikeys ET41, Your ET33, Kevs ET25 - they all differ from wheel to wheel :S

    Here's my offset 42 or 45 - it sits flat with the arch already...


    BTW, do your rears rub. I have offset 42 (pretty sure its 42 but cant remember) but with people in the back, the rear scrubs something
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  12. #11
    hatmeow's Avatar
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    My rears don't rub (no pun intended) and sits comfortably even with 3 in the back. I have lowered the car very slightly about 15mm with PSS10s. I have also added 5 mm spacers in the rear to make the rear look a bit wider to match the wing flush fronts.

    More photos later...

    I am not so sure if ET43+10mm spacers = ET33... Does it really just add up?
    A3 2.0T Sportback DSG.

    Engine / Trans:
    K04, Unitronic Stg II+ & DSG Stg II, S3 Injectors and Intercooler, APR F/Pump. BSH Intake, Forge DV, Oettinger Turbo Outlet, Eurojet throttle pipe, Milltek TBE. SP Meth Injection.

    Brakes and Suspension:
    Brembo 6 pot w/ 345mm slotted disks, TT front suspension, HPA Coliovers, OZ Palladio, 225/40/18 BS RE001

    Others:
    S3 Front, Pedals, & Mirrors, 09 SB Skirts & LED Rear Lights, Original HID retrofit, Oettinger Roof Spoiler. Defi Turbo Guage, FBMFSW

  13. #12
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    Quote Originally Posted by hatmeow View Post
    My rears don't rub (no pun intended) and sits comfortably even with 3 in the back. I have lowered the car very slightly about 15mm with PSS10s. I have also added 5 mm spacers in the rear to make the rear look a bit wider to match the wing flush fronts.

    More photos later...

    I am not so sure if ET43+10mm spacers = ET33... Does it really just add up?
    et43 + 10mm spacers makes it ET33 because your making the wheels sit further out towards the curb!!! trust me they will stick out MILES!! I have ET41 and they poke out around 5mm on the fronts, maybe a tad more.
    Audi A3 2.0TDI S-Line
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    kaz219's Avatar
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    IS there anyway to measure offset??

    The calculations youa re doing are right but it doesnt sound right..

    However, this guy is running ofset 35.

    Do these look like yours?

    http://cgi.ebay.co.uk/ws/eBayISAPI.d...m=290292923398

    He confirmed they are offset 35 as i did put in a cheeky bid :P
    Audi A3 S-Line DSG - sold
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    kaz219's Avatar
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    Quote Originally Posted by Mikey View Post
    et43 + 10mm spacers makes it ET33 because your making the wheels sit further out towards the curb!!! trust me they will stick out MILES!! I have ET41 and they poke out around 5mm on the fronts, maybe a tad more.
    Mikey - I have ET42 with 225mm width and they dont poke out at all.

    If yours poke out 5mm, shouldnt mine poke out 4mm ?

    Im pretty sure the width of the tyre has something to do with this too as you have 9.5 IIRC.
    Audi A3 S-Line DSG - sold
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    Currently Vtec'in around in an Accord Type R :P

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    The tyre manuacturer makes a difference too. My contis have a much chunkier profile that the Pirelli P Zeros I have on the rear!
    B6 1.8T Avant s line gmbh

  17. #16
    SMc
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    I'm a bit relieved to read this thread as my new wheels come tomorrow and I have gone for ET35 on an 8x18" wheel.....I was a bit worried it may be too much but if yours are effectively et33 now with the spacers and dont rub, even though it is lowered then I feel more comfortable now about my order!

    The brakes looks brilliant, I'd love them but dont think I'd fit them behind the wheels I've ordered.......

    On my 3rd Audi.....my latest PROJECT...... a 2002 A4 1.9TDi Avant Sport.... wrapped matt white with 19" VMR matt black wheels.

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    kaz219's Avatar
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    Quote Originally Posted by SMc View Post
    I'm a bit relieved to read this thread as my new wheels come tomorrow and I have gone for ET35 on an 8x18" wheel.....I was a bit worried it may be too much but if yours are effectively et33 now with the spacers and dont rub, even though it is lowered then I feel more comfortable now about my order!

    The brakes looks brilliant, I'd love them but dont think I'd fit them behind the wheels I've ordered.......

    look good mate - do post up pics when they're on!

    wanna see the poke :P
    Audi A3 S-Line DSG - sold
    Golf Mk4 Autograph - sold
    Currently Vtec'in around in an Accord Type R :P

    For Sale: ST3 Remap Console - PM Me :P
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    I found this site useful when i was going through the same thoughts.

    http://marksink.com/tire_wheel_offset/

    You can punch in your original wheel stats and the new wheel you're going to replace it with and it works out the difference between the two (how much further it sticks out etc.)

    There's also a tyre calculator so you can see what effect wider/lower profile tyres have.
    2007 S3 8P, Phantom black, REVO stage 2+, Milltek TBE, EVOMS, Autotech fuel pump, Forge "twintercooler", Forge DV, Forge shortshifter, Black optics, Privacy glass, Buckets, RNSe + SDS, Bose, iPod, FBMFSW, F&R armrests, Cruise, Interior light pack, Auto lights and wipers, Flat tyre warning indicator, Lamin-x, BBS CH's, H&R ARB's, H&R coilsprings

  20. #19
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    ET43 with 10 mm spacer will be ET33, BUT REMEMBER; wheels often change design in lower offsets. Therefore, a ET33 rim might have spokes that have another angle towards the rim centre.

  21. #20
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    if you add 10mm spacer to a ET43 rim it will be ET33..

    but when it comes to caliper clearance, design i s much more important..

    one more thing, i dont think ET33 is a good idea on an A3... you should keep ET max 45-40...

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  22. #21
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    as said on here, its not to do with the offset its design. alloys like OZ MTM BBS will work because they are designed to be used with big brakes such as yours, and et 33 will poke out a lot, the standard a3 runs an offset of ET55 i have fitted rs6 alloys and they are ET45 and they are flush with the wings. yours best off paying for a set of really good alloys such as

    http://www.performancealloys.com/det...sion=778809047

    http://www.performancealloys.com/det...sion=778809047

  23. #22
    heyadamhey's Avatar
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    The offset ET value is the distance between the rim's center line and its
    mounting surface.

    So if you buy a wider rim it will stick out more while still having the same ET value as your previous rim.

    Found an ET calculator here
    Last edited by heyadamhey; 14th July 2009 at 09:48. Reason: add image
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  24. #23
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    on most setups the tyre is wider than the rim, so the width of the wheel doesnt make any difference to where the outer edge of the tyre is - only the offset makes a difference unless you go for a big stretch with a wide rim and narrow tyre, then the metal rim edge is the widest part.

    so a 7.5 x 18 et54 a3 rs6 oem wheel with a 225/45/18 will have the same tyre outer edge as an 8 x 18 et54 copy if such was available.

    however, a tt 9x18 or 19" et52wheel with a 225/40/18 streched on will have the metal rim much further out and might seem to stick out, but the streched tyre will be mostly in the arch and probably wouldnt catch because the height of the tyre wall keeps the metal rim well away from the arch

    an 8x18 et45 copy wheel with a 225/40/18 is going to be approx 9mm further out than an oem 8x18 et54 with 225/40/18 but that should fit ok without catching unless you modify the camber. even a 235/40/18 on et45 should be ok but thats about it.

    in general a high offset wheel is deeper in to the arch, and a spacer is directly additive to the offset, and a big offset with spacer is going to clear a big brake/caliper better than a low offset wheel of the same size.

    low offset wheels however usually look better due the bigger natural dish towards the centre.....
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