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Will these wheels fit?

Discussion in 'A3/S3 Forum (8L Chassis)' started by ShaunS3, Jul 16, 2013.

  1. ShaunS3
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    ShaunS3 Yorkshire & Humber Rep. Regional Rep

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    [Jul 16, 2013]
    Obviously will require some sort of offset adapters but just wondering if it is physically possible to fit this rim dimension onto the S3 8L chassis?

    DSC_0227.jpg
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  3. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    dEpends on the pcd and the offset. Those figures are just width and diameter.
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  4. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Jul 16, 2013]
    Look for the offset Shaun, needs to be between ET25-45 based on 7.5" rim, just to let you know that OEM 18s are 8" wide, but there's nothing wrong with running 7.5" wide rims. Stud patter needs to be 5x100 and centre bore 57.1mm off the top of my head.
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  5. ShaunS3
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    [Jul 16, 2013]
    Ok so they are coming off a A3 8P S line.

    How do I find pcd and offset to compare to the 8L?

    I take it the adapters are the same as wheel spacers?
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  6. Curt
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    Curt Member

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    [Jul 16, 2013]
    PCD will be 5x112
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  7. kwistof
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    kwistof South East Events Moderator Regional Rep

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    [Jul 16, 2013]
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  8. ShaunS3
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    [Jul 16, 2013]
    Thanks dude.

    I know a local engineering firm that could make them up cheaper with high grade material.

    How do I know what spacing I need in mm?
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  9. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    You need to know what offset they are first
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  10. ShaunS3
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    [Jul 16, 2013]
    A3 8P

    PCD: 5x112 Offset: 45-50 Bore: 57.1


    S3 8L

    PCD: 5x100 Offset: 35-38 Bore: 57.1



    Looking at the figures, i'm presuming they will fit with adapters no problem.

    How do i know what spacing i need in mm?
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  11. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    Use an online 'offset calculator'. Put your current wheel dimensions in, then the new wheel dimensions, and it will tell you how they sit. I.e. 20mm less 'poke', therefore requiring 20mm spacers to match your current wheels.
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  12. ShaunS3
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    [Jul 16, 2013]
    I did want them to have a little wider stance if i'm honest, rather than going for standard spacing. Just so they fill the arch better, not so much that they stick out.
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  13. Curt
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    [Jul 16, 2013]
    That's based on 8P offset though... Do you know those wheels are 45-50?

    I'd imagine the adapters are likely to be at least 25mm, so you'd have a bit more poke than standard. That's if they are 8P offset...
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  14. ShaunS3
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    [Jul 16, 2013]
    Yeah, the wheels are from an A3 8P with 45-50.

    The adapters from DPM are either 20, 25 or 30mm spacing. Unsure which to go for....probably go for 20mm at a guess.

    Sandip fitted the 19's to his and used 20mm on the front and 25mm on the rear:

    Classifieds: 19 " BBS RS861's + adaptors + tyres

    Would mine use the same spacers even if the rim is smaller?
    Last edited: Jul 16, 2013
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  15. Curt
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    [Jul 16, 2013]
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  16. ShaunS3
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    [Jul 16, 2013]
    This is what i think the calculations are:

    A3 8P - New wheels

    PCD: 5x112 Offset: 45-50 Bore: 57.1


    S3 8L - Old wheels

    PCD: 5x100 Offset: 35-38 Bore: 57.1


    Untitled.jpg
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  17. Curt
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    [Jul 16, 2013]
    It won't be ET50 though... it'll be 25-30
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  18. ShaunS3
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    [Jul 16, 2013]
    Is that because the spacers will be minused from the original offset stated for standard car? Sorry - i'm a total noob to wheel dimensions and don't understand the calculations ha.
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  19. Curt
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    [Jul 16, 2013]
    Yeah, that's correct. Obviously your spacers will push the wheels out by another 20mm (if they're the ones you go for...) so you have to take that into account.
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  20. ShaunS3
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    [Jul 16, 2013]
    I see, let me try again....
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  21. ShaunS3
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    [Jul 16, 2013]
    Untitled1.jpg

    This is based on 50 offset with 20mm spacers.
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  22. Curt
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    [Jul 16, 2013]
    Yep, that's right. Hardly any difference then. But bear in mind that you may have 5mm more poke if they're 45 offset. Unless you know they're 50?
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  23. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    Minus your spacer from your offset. Would help if you knew the offset of the wheels youre thinking of. Then you can get it bang on then. For instance if you wanted them say 5mm further than your current wheels, youd subtract from the ET in the calculator till you achieve it, and bingo, you know what size spacers to give you that offset.

    The 'poke' will vary with rim width bte, but not diameter. So an et30 7 inch rim would look completely different to an et30 8 inch rim.

    8p wheels tend to have a high offset, so for now assume the least for your calculations, then you will never be too much, and hitting your arches.
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  24. ShaunS3
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    [Jul 16, 2013]
    Ok guys, so please bare with me.

    I roughly know the offset of the new wheels based on info from wheel dimension sites.

    How am i going to find out the wheel's true accurate offset?
    #23
  25. Curt
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    Curt Member

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    [Jul 16, 2013]
    Ask the seller what is stamped into the wheel (presuming that you haven't already got them...).

    But either way, 20mm adapters will be fine.
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  26. ShaunS3
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    [Jul 16, 2013]
    Not got them yet. Didn't know there were more stamps on the wheel, i thought that what i put up was the only dimensions stamped into the wheels.
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  27. Curt
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    [Jul 16, 2013]
    Nah, should have everything you need on there :)
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  28. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    The offset and pcd are also stamped. Id also bet that 20mm will suffice. 25 at a push providing the new wheels are high like et48
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  29. ShaunS3
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    [Jul 16, 2013]
    I will keep you both updated once i have the answers for you.

    Thanks alot to everyone contributing to this thread and helping a noob out! :)

    Shaun.
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  30. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    Not a problem. Its funny me and curt postong the same thing at the same time and replying to us both lol.
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  31. ShaunS3
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    Didn't want either of you to feel left out ;) ha
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  32. ShaunS3
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    [Jul 16, 2013]
    Right - I have the answers as promised :)

    5x112
    57.1
    7.5J
    ET54
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  33. superkarl
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    superkarl MAN OF STEEL

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    [Jul 16, 2013]
    Wow, very high, big ass adapters needed then. Plug your numbers in
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  34. 16Klappe
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    16Klappe RacecaR forward is RacecaR backwards. Supporter

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    [Jul 16, 2013]
    Forget it and buy a set of 8's in a decent offset I say.

    You'll be spending as much on adapters/spacers as you will on another set of wheels.
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  35. Curt
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    [Jul 16, 2013]
    Due to the fact that they're more narrow than your current wheels, I think 25mm would be a better bet. That's high
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  36. vfr800
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    vfr800 Active Member

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    [Jul 17, 2013]
    Ooh from the pic of the back of the spokes they look like BBS speed lines like I fitted to mine?
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  37. ShaunS3
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    [Jul 17, 2013]
    Yups :)
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  38. jojo
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    jojo Looking for Boost! Staff Member Moderator

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    [Jul 17, 2013]
    I'm in agreement with this really. Can you not buy these rims in the correct offset and stud pattern for the 8L? I can understand if the rims are rare or unique of course. But to add all that extra unstrung weight, just to fit a set of rims is stupid in my opinion.
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  39. kwistof
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    kwistof South East Events Moderator Regional Rep

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    [Jul 17, 2013]
    Sound advice this.

    I only run 5 x 112 fitment with adapters because of how cheap I picked by BBS rims up for in the first place.

    By the time you factor in set of decent adapters and bolts it can/will get very costly.

    Btw just a note; if you do go for the H&R adapters then your OEM wheel brace tool in the spare wheel well will be useless if you get a flat tyre, as it's too bloody fat to get between the edge of the hole and the nut :(
    #38
  40. vfr800
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    vfr800 Active Member

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    [Jul 17, 2013]
    :crying: But they look so good!

    I never thought about the spare wheel - ooops. Will keep a socket and breaker bar in the car from now on.
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  41. ShaunS3
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    [Jul 17, 2013]
    Can you give me the dimensions of yours buddy?
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