My GS had a spare and run flats. Maybe they weren't from the factory though, I bought it with 30k miles (and it had new tires on it), but seems like I read that it came with run flats. But I agree. The run flats were the worst. I ended up pulling mine off after about 15k miles because it was all I could bear. I could only imagine what a runflat on a 33" tire would look/feel like.Run-flats ride AWFUL. You don't wanna go there.
I had a Lexus IS-C convertible a few years ago, and that car came with run-flats from the factory, I believe to save the weight for the spare (even though there was a well in the trunk). It was common to swap out the run-flats with a set of Michelin Pilots, then get a spare, because the ride was so terrible. Mine was already done when I bought it.
And the biggest problem is that run-flats are hard to come by if you’re far away from big metropolitan cities. So, if you damage your run-flats and you’re in a small town, then you’re screwed.