Is there any reason 225/50/16 tires would not work on 16 x 7 1/2 rims on a 400E with ET of 38? I know a higher ET would be better, but can't find any 8 hole wheels with 40-42 et or could I go to 16 X 7 wheels and if so what et? I will be running 500E 16 x 8 on rear with 225/50/16 tires.