bigreen505
Expedition Leader
Congrats on the new Trooper.
285/75/16 will fit no lift. But speaking of lift, you might want to consider installing some OME929 coils. They will lift you about 2" but are worth it for the increase load carrying capacity.
I don't think a lift is about fitting bigger suspension, but as Steve hinted, getting springs/shocks that don't suck.