Rim hub question

[Djames210]

Finding conflicting info on wheel hub measurements.

My car is 2019 Audi Q3. I believe the car has Offset (35mm) and Hub bore (57.1mm).

Purchased double spoke rims from a 2016 Audi A6: (19x8.5). I think the rims have Offset (45mm) and Hub bore (66.6 or 57.1)?

Do I need wheel spacers and hub centric rings? If so, what sizes?




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[Smac770]

wheels spacers is related to change in offset. hub rings are related to mismatched hub bores. So completely different subjects. You might need one or the other, or both. But the decision process for each is completely independent.

You have a VW clone Audi (A3/TT/Q3), so you have the VW 57.1mm center bore. Audi left that for the 66.5mm center bore starting with the B8 (A4/A5/Q5), the C7 (A6/A7), the D4 (A8), and the E2 (4M Q7/Q8) generations. The Audi wheels are hub centric, not lug centric. The hub has a protrusion and the wheel expects to sit and center on that protrusion. So to recreate that at the larger diameter, you need 57.1mm to 66.5mm hub centric rings.

The 2019 Q3 19x8.5 stock wheels are et38 (offset +38). No 2019 Q3 stock wheels are et35. They are et38, et40, or et43, depending on wheel width. For x8.5, they are et38. So your A6 wheels are 19x8.5 et45, or they might be et43. Both variations of wheels were on the C7.5 A6. In either case, that means the new wheels will sit either 5mm or 7mm inward from where the same size wheel would sit stock on a Q3. More positive offset = more inward wheel position. So throw some 8mm spacers on there and call it a day.

And you'll find spacers that incorporate the hub centric ring.
Such as the 42 Draft Designs 42-824-008 : https://www.urotuning.com/products/w...#collapse-tab5
Or the H&R TRAK+ 1655571665 : https://www.urotuning.com/products/w...112-1055571665
(be sure to pick the 8mm size on those pages; I have no experience with either product, just what came up first in a google search)

[ColoAllroadJeff]

Super helpful info - just what I was searching for!

[NorthernGTI]

Super helpful info - just what I was searching for!

You can get wheel spacers made so that they're hub and wheel centric. 57.1mm inner and 66.6 outer. Adaptec/Motorsport Tech makes them. Size wise, you will have to do some calculations as they might only offer that option in minimum of a 10mm spacer.

You should be able to get just hub centric rings and call it a day. I doubt you will run into any issues with 7mm less clearance.