I am going to need some tire replacement soon, I currently have a 2.3 WTB tires on Mavic crossride disc. Now I would like to go 2.5 size (kenda Nevs) on the same rims, would it be okay ?

The reason why I like 2.5 its because I like going downhill. or maybe 2.5 front and 2.35 rear.

Ty in advance for the input.