Chrysler did not equip most Crossfires with run flat tires as OE, but to be sure, look for an "RF" or something like it on the imprinted tire designation.

These cars ride rough as it is, so most folks shy away from run-flats and just take the chances by watching the TPMS. Even using the OEM supplied fix-a-flat canister is a no-no, in that the stuff will gunk up a tire, cause it to run wildly out of balance and give fits to the techs trying to repair it.

Most would suggest buying a quality replacement based upon tire reviews giving high marks to a smooth and quiet ride, such as Continental Extreme Contact or Hankook Ventus V12.

And carry AAA tow coverage.