With modern cars left stock and biased towards understeer, the front tires will most likely wear faster, even with rear drive. That is, of course, unless you tend toward doing burnouts!As a rule of thumb it is the drive wheels which get the most wear and tear. That used to be the back in the olden days of rear-wheel-drive cars. More recently most cars are front-wheel-drive thus more wear on the front.
If you have the 275/40s they are essentially the same :thumbs: about a half a millimeter shorter.I'll check the exact specs when I go out to my car, but it shouldn't be too much difference. The back tires have a "lower profile" (in other words pretty much the same sidewall) to compensate.