Run flat tyres are just awful.
Not only are they not great for “spirited driving”, they’re also uncomfortable despite having more sidewall than low profile tyres.
99.8% of my driving is with inflated tyres, so i’d like to get maximum effort in those regards, not compromise the car (even slightly) for the unlikely case that the tyre blows out on the motorway. With a nail in the tyre, you’d need to be hundreds of miles away from home for run flat tyres to become feasible – it doesn’t just go flat instantly, so by the time the run flat tyre could actually “shine”, you’re long at home/have the tyre guys come out.
And those are not “supposed” issues, those are simple physics. You can’t argue away a heavier tyre with a stiffer sidewall.
In regards to TPS systems, i’m torn. I think it’s kinda cool to get accurate pressure readings from the tyres, but there’s a downfall to this, come winter/summer. I prefer the “dumber” system, that just measures rotational speed and alerts you if one tyre spins faster/slower due to inflation/deflation. Still hella accurate (got alerted after losing 3 PSI in the tyre), but since it measures tyres against each other, it doesn’t go off if ALL of them lose a bit of pressure due to weather.
Downside of course, i have to check actual pressure with a valve.
Prior: SEAT Ateca Xcellence Lux 1.5 TSI DSG MY19, VW Golf GTE PHEV DSG MY23
Current: Hyundai Ioniq 6 Ultimate
Next: we'll see what's available in 2028.