Don't you have to replace a runflat tire if you drive it on the "runflat" interior for very long? Aren't those expensive too? I don't have data, but I have a colleague that got rid of the run flats when it was time to change tires for several reasons, one being how expensive they were to replace.
The logic of the runflat is when you’re in a bad part of town or say on US 95 north of Winnemucca and you get a flat on, say, your sidewall.
The tire will have to be replaced no matter what.
But because it’s a runflat you can safely drive to a location where it’s safe to change the tire or else if you’re in BF Egypt you can safely drive to civilization.
Without adding a $1500 to $2500 OEM rim to the cost of replacing a tire.
So the extra money for the runflat will make sense the very first time you find yourself wishing you’d bought the runflat instead of being stuck wherever you happen to get stuck.