my car is a '93 civic lx, it came with 175/75/13 and i put 195/60/14 tires on some okay rims temporarily.

i am buying new 15x7" rims (40mm offset?) + tires and i am trying to get the widest possible without messing up the speedo by more than ~.5% and without any rub.

by my math.. if 175/75/13 is the stock size(is it??).. would 215/50/15 be my best bet? would 215 rub at all? it seems 215/50/15 is almost the same height as 175/75/13