ejudgie

I have some winter tires/wheels from my previously owned 2013 S4. They are Dunlop 245/40R18 97T.
Does anyone know if these will fit on my 2018 S4? Current tires on the 2018 are Hankook 245/35ZR19 (not sure that matters).
Both cars seem to have the same bolt pattern of 5-112mm (5x4.4") according to this site:
https://tiresize.com/bolt-pattern-finder/
Is there any reason why they would not work/fit?

Thanks,
Ed

roastpuff

You should be fine, the offsets and sizes look correct.

SMac770

You don't actually present your wheel specs. Are they actual Audi OE winter wheels for the B8? Or just "some wheels I used in the winter on my B8"?
B8 and B9 use the same hub specs; the only consideration is offset. B8 18" offset was +47; B9 18" offset is +40. So the B8 wheels would center about 1/4"-1/3" more inward than B9 wheels, but should be a non-issue functionally.

ejudgie

No they are not Audi OE winter wheels for the B8. Just some wheels I bought through a local retailer.

Here are some photos

SMac770

The wheels in the pics are 18x8.0 et40, so same specs as normal B9 A4/S4 18" wheels. So should look perfectly at home.

ejudgie

Thank you!

ejudgie

So just had these put on today. I think they are ok but there is literally no space between the spoke and calibers. I can slide a piece of paper but not much more. And I don’t hear anything. I asked installer to confirm they would be ok so I assume they are.
should I add a spacer to be sure?

SMac770

Probably a toss up. If they clear, they clear. But driving forces can make rigid objects flex. The problem will be a hub-centric spacer that's not particularly big.
https://www.goapr.com/products/wheel...parts/MS100160
Thin, but the spacer will sit on the hub ring while the wheel will not. The wheel will be resting only on the lug bolts.
https://www.goapr.com/products/wheel...parts/MS100166
Looks like the APR ones don't recreate the mounting ring until the 10mm spacers.
Sure there are other products out there, these came up first in google.
Looks like ECS 8mm have the mounting ring. https://www.ecstuning.com/Audi-B8_A4...s/Spacers/8mm/

ejudgie

Thanks.
Would most tire/rim garages be able to add these spacers?
I feel like they are very close. Here are some photos.

SMac770

I don't deal with wheels daily, so can't say for sure if that's "too close" or "enough to get by". It looks tight, but I think others have posted pics of aftermarket rims with similar gaps.

https://help.summitracing.com/app/an...r-my-brakes%3F
So they say have at least .100" (2.5mm) clearance.

https://www.racetechnologies.com/art...rake-clearance
This one says 3mm (.118") clearance.

https://forums.nasioc.com/forums/sho....php?t=1166509
Seemed to be 2mm min here, though 1.5mm seemed maybe ok for normal road use.

That doesn't look to be even 2mm clearance. Spacers are simple, take wheel off, put spacer on, put wheel on. A wheel shop might be able to better discuss going with a small 2mm spacer vs an 8mm that would recreate the hub ring.