Can i get either 25" or 26" Titan 589's to fit on my stock foreman rims. And if so what sizes. Or would you suggest different tires. I want a good mud tire with mild trail manners. Thansk in advance.

Yes Titan 589's in 25,26 and 27 inch sizes will fit the stock rims as long as you do not try to install the wide (11 & 12 inch) sizes on the front- for those you will need aftermarket wheels and probably spacers. I would also like to suggest Goodyear Mudrunners. They are both excellent mud/trail combonation tires with the Goodyears slightly better on the trail vs. the Titans slight advantage in mud. That's my opinion.