One problem related to wheel rim has been reported for the 2003 Lexus SC430. The most recently reported issues are listed below.
2003 Lexus Sc430 has problems with run flat tires and rims. The rims are bent and dealer said that it was runout caused by excessive driving. I have complained to three dealers, Lexus of grapevine where vehicle was purchased, Lexus of shreveport/bossier and parke Lexus of little rock. I am currently working with the Lexus dispute settlement ctr.