Yoshimura

I have this set of wheels and I need to know if they will fit on the SQ5. I plan to use them as winter wheels.

Will they fit?

Chuck2006

Best idea would be a test fit on a dealer SQ5...

It could, and probably would need spacers. Don't know anyone who has fitted 18" on SQ5, sorry.

Yoshimura

Oh! The problem could be that the caliper will it wheel spokes...

MP4.2+6.0

the calipers are honestly not that esoteric. They are standard issue stuff from the Audi parts bin on the base D4 A8. Since I can fit 18's on my D3 A8 with 385mm brakes (vs. SQ at 380) and the SQ5 spare is an 18, I have always thought the inside of the wheel will clear diameter wise. As to the spokes, I don't think D4 offsets are particularly aggressive, nor are those SQ/D4 calipers particularly wide (like a classic Brembo big brake opposing piston set up might be), so I think it may go.

But as said, the only way this will be answered once and for all is for someone to try bolting 'em up and reporting back.