Allot of difference. The 265/75-16 is 5.03% 1.59" larger in overall diameter than the 255/70-16 and is a narrower tire. These 2 sizes are not interchangeable.
Standard size - 255/65r16
UK sizes are 255/65R17 for the Acenta or 255/60R18 for the Tekna.
255/65-16
255/65 R17
255-65-16
It usually will, but remember to run same size on both sides.
255 70 16 is the factory size it came with.
The correct factory tire size for a 2014 Jeep Wrangler is 255/75R17.
255/55/17
255 mm wide versus 245 mm wide. Can not answer for height since the second tire you listed as a 0 for the next number. The second number in a tire size is the aspect ratio of the side wall. If it is 65, that means the side wall is 65% of 255mm in height.
The correct factory tire size for a 1010 Jeep Wrangler is 255-70/R17.
The correct factory tire size for a 2009 Jeep Wrangler is 17 75/255.