Run-Flat Tires More Available but Cost is High, Lifespan is Low

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Background
Auto mak­ers like run-flat tires because reduce weight of vehi­cle, boost­ing fuel econ­o­my
Run-flat tires also cre­ate more usable trunk space where the spare tire once resided
JD Pow­er 2001 sur­vey found 87% run-flat tires most sought-after new fea­ture
Tire brands offer­ing run-flats include: Bridge­stone, BF Goodrich, Goodyear (GT), Pirelli, Dun­lop, Miche­lin