I just took a long drive in my friends new 94" wheelbase Crossfire (the Z is 104") that comes with 19" rear tires. We took it on the same roads that are very uncomfortable in my 350Z and you wouldn't believe how smooth the Crossfire is. Both cars pull the same "G" force on a 300' skid pad (.88). We drove both cars back to back. I will keep the Z but I would like to trade in my suspension.