Biggest tyre to fit under stock Triton

[huffy]

Hi guys

Apologise if this has already been covered, i had a quick look but couldnt find anything.

I want to get some ATs for my Triton, something a little more agreesive but not MTs.

Whats the biggest size i can go that will fit onto my 2013 4X4 Triton that has not got a lift yet?

Thanks in advance

Huffy