The diameter is only 1/10 of an inch smaller than a 245-75, 30.4 vs 30.5". Even the tread width isn't significantly different, 1/2 an inch, 7 vs 7.5". The biggest difference is the section width, at 1 1/3". It is a load E so it is a couple pounds more than the load C 245 a couple pounds less than the load E 245.
I wonder if the 1/2" tread difference will reduce the rolling resistance enough to improve fuel economy? Might be a good choice for the occasional off-roader who spends most of the time on the road.
I thought they would look too skinny, and too small, but I like the look, and I was surprised when I saw them mounted and had to look up the specs.
I always forget how little section width has to do with tread width.
http://www.tirerack.com/tires/tires.jsp?tireMake=Goodyear&tireModel=Wrangler+DuraTrac Now we just need some performance feedback with the 215's.