Used Aluminum Trailers Bot A Used Trailer, Galvy, Owner Said It Was All Set, Bolts On Wheels Are Rusty- Should I Replace- Maint?

Bot a used trailer, galvy, owner said it was all set, bolts on wheels are rusty- should I replace- maint? - used aluminum trailers

the first time boat owners. the engine tuned up. This is a used 25 HP Evinrude. Want to tow the boat a few hours at the camp this summer will not collapse on the street. Fearing that the lug nuts to use, all rusted. Should I replace brass or stainless steel? or leave things as they are? Is there a website that for what to do, what might look for a rational maintenance of trailers. This is a bunk trailer for a fishing boat aluminum 16 ft .- Nothing fancy. Thank you for the help!