wheel and tire ???

I had a person ask me how wide of a wheel will fit on the 83 gpz 750 swingarm. I'm guessing the stock width will be the only size. How wide is the stock wheel? And will any other brand wheel fit the swingarm? Does this make any sense? Who am I? Where have I been? :woohoo:

According to the Turbo guys on Lorcans site ( www.750turbo.com ) a 5" wheel will fit for sure, and a 5.5" wheel may fit. I have several GPz750 rear wheels, and some are 2.5" while others are 3" wide, I have not yet been able to determine the reason for this.