Outer Limits 4x4 Board

Hey guys, wanting to upgrade my 265/70's with something 'slightly' larger.
I've narrowed it down to either Cooper st's, or Baja radial 2's in either 305/70/16 or 315/75/16. Plz read my profile for vehicle details.

Just wanting some advice on the negative side of such an upgrade, like clearence, gearing, fuel econ., steering etc.

Any info would be much appreciated

great for clearence but expect to lose 15 to 20% power.
Won't change fuel econ greatly on highways but around town you will be using a bit more.
steve

I run 35x12.5/15 (315x75/16) radial Claws on my pertol GU Wagon.
the 35s kill the road performanc and High 4 performance, down one full gear and unless the hwy is flat i dont use 5th gear.
when my GU is loaded for a trip with the family taking off even in 1st puts strain on the clutch.
My low range is great due to Rockhopper Transfer gears but i would of prefered 4.6 Crown Wheel & pinoin Gears,that would of fixed everything.

These are the things you must consider when upgrading to large tyres.

Cheers Grant