Spark with 'run flat' tires?
I have been trying to find a donut spare for my 2013 but the bolts are too short for most spares. One tire shop owner said (over the phone) that these might be run-flat tires and okay to drive until I could get them repaired.
I make a loooooong trip across the desert 2 or 3 times a year, so having discovered that I have no spare is kinda "harshin' my mellow, man."
Are these 'run-flats'? Does anybody know?