need tire brand recommendations from those with experience. have 225/50/17 on all 4 at the moment because i bought the car used. need to put 235/50/17s on the rear. also, what damage could ensue from having the 225s on all four wheels? i do city and highway driving on wet and dry roads...no need for snow/ice capacity...would appreciate any advice!

one other question, tire blew out this weekend and inner side wall separated from tread...to the point i can see threads...with some uneven wear on the inner part of the tread...thought initially low pressure, but would have expected to see (and didn't) some indication on inner and outer sidewall of riding on tire with low pressure. ideas??

thanks for the help!