Put the 245 on the front and buy some 265 for the rear, then when the front wear out you already have another pair
Seriously though, square setup of 245 all round won't work, the traction control will think the rears are spinning too fast and lock up the power which can be pretty dangerous in situations where it really doesn't need to activate.
It measures the speed of the front wheels to the rear, so if the car is moving, the smaller front tyre had to spin more times to travel the same distance as the rear. If they are travelling at the same rpm then the car will think the rears are going too fast in comparison to the front and TC will kick in.