Well, sadly enough I can't help you remedy your problem but I can definitely sypathize with you. I own a 2003 350Z and I have gone through 3 sets of front tires in the last year. The car has been taken back to the dealership where I bought it because of numerous letters that have been sent to me from Nissan regarding the front end specs. I did however see an article on a 300zx that had suspension upgrades. Here it is and I hope that it may solve some of your problems
http://www.sportcompactcarweb.com/pr...c_project300z/