I am a big fan; I’ve had them for years on different cars and they’re absolutely rock solid. I’m always a little nervous of the normal ProRides as they rely on clamping the frames, and I always wonder how much stress they put a frame under – especially if you’re leaning into a fun set of corners, say.
Although putting wheels in the boot is a bit of a dirty job, you can shove the wheel in a wheel bag if you must. Getting the bike on the roof is no harder than ProRides – you just have to watch for dropping the forks onto the roof – but the knack is to make sure the rear wheel strap is ready to take the rear wheel, and then slide it all up in one motion.
I have 4 now on my 5 series and all the bikes go up there – even the kids. I just know that the bikes will be properly solid when I’m driving along. Even at 3 figure speeds (in Germany, obviously).
They rarely appear 2nd hand on eBay, so you may need to bite the bullet and go new at ~£155.
Well recommended in my book.