One problem related to spare tire has been reported for the 2005 Infiniti Q45. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2005 Infiniti Q45 based on all problems reported for the 2005 Q45.
I purchased 4 new tires for my veihcle on 7/24/2010 the tires in question are michelin p245/45r18 primacy mxv4 96v. After only 3500 miles the rear right tire blew on the higway, furtenately for me there was heavy traffic and I was not doing over 30mph. The tire was replaced with the spare tire and then it was discovered a 3" gash from the side wall to the first thread. No foreign objects were found in the tire to suggest that I picked something on the road,however I did notice that the reinforcements were ripped I am concerned about the safety of these tires and have kept the damaged tire for inspection for anyone who may whant to investigate. Thank you.