TOPIC: Rim width differences...

I'm not sure I'm getting the right info out there but my front rim is a 1.60x18 and I'd like to run a bigger tire than the 90/90 which is on there. Some cheap brand Cheng Tire. Which is funny bc I thought the 1.60 rim couldnt handle anything bigger than 3.25 at most but the 90/90 is close to that isnt it? Most tire brands I'm looking at say the minimum rim width is 1.85 for the size tire (3.5") i want to use.

Anyone has any suggestions?