82 kz1000 ltd tire size ?

I am getting a parts list together and wanted to order some tires . I would like to put the widest tire I can on the rear and lowest profile as well . does anyone know what the widest I could go on stock swingarm is ? stock rear is 120/90/16 ! also any info on front tires stock is 3.25/19 any info on what that relates to like say a 90/19 or 100/19 are they the same front or different ? Thanks

My KZ650-C1 came with 3.25/19 on the front when new. I use a 100/90 V 19 on the front of mine - no problem. The stock rear tire on the 82 kz1000 LTD was 130/90-16. A 120 rear tire would be way narrow on that rim. Ed

Thanks ed , anyone know what the widest rear I could fit in the stock swingarm ? 140 or 150 maybe ?