In need of rear tires. Only drive 1-2k/yr. Would like to match OEM size fronts that have only 4k on them. Would anyone suggest going 245-50R16 for rear in order to match front tread pattern instead of buying all new Bridgestone or Toyo's that come in OEM size when I only need rears? How feasible is it and are there any impacts (looks, speed, etc.) with the different size?