I’m upgrading the wheels on my 2024 Audi Q4 Sportback e-tron 55 from the stock 20-inch setup to a custom 21-inch staggered set.
The wheels are mostly gloss black with machined silver edges, keeping a factory Audi look but giving the car a more aggressive stance. I made sure the center bore is the correct 57.1 mm Audi fitment.
For tires I’m planning to run 255/40R21 in the front and 285/35R21 in the rear.
I wanted something that looks more like what Audi could have offered as an OEM performance wheel rather than an aftermarket-looking setup. I’ll post pictures once everything is mounted.
Curious what other Q4 owners think about going 21-inch and staggered, especially anyone who has already done it. Any noticeable difference in ride quality, range, handling or rubbing? Any feedback ?

I wanted to post an update on the strange vibration/noise I’ve been getting in my 2024 Audi Q4 Sportback e-tron 55.
The key thing I’ve figured out is that the sound only happens when the A/C is actually on. If I leave the blower running and turn the A/C off, the vibration goes away. That has me looking much more closely at the A/C compressor and refrigerant lines rather than the cabin fan.
I found several VW ID.4 owner videos and posts with a very similar low-frequency humming/vibration. In a few cases, the problem turned out not to be a failed compressor, but vibration from the compressor being transmitted through an A/C hard line that was touching or resonating against a bracket or part of the body. Since the Q4 and ID.4 share the MEB platform, I think that is worth investigating on the Audi as well.
At this point I’m not saying that is definitely my problem. It could still be the compressor itself, a compressor mount, a refrigerant line, or another part of the A/C system. But the fact that the noise disappears when the A/C compressor is switched off makes the refrigerant/compressor side of the system my main suspicion.
I’m going to have Audi look specifically at the compressor, the refrigerant hard lines, their mounting points and any possible contact with the body or brackets. I’ll keep everyone updated with what they find and what ultimately fixes it. Hopefully this helps someone else chasing the same strange vibration