I hope this doesn't cover ground already covered elsewhere. I did search through the forums but didn't see this exact question, so here goes. I'm looking at a new set of tires for one of my '78 coupes. Both have the stock 14" steel wheels. I've been pretty happy with the set of Yokohama Avid tires I have on the other '78, which I believe are 185/70R-14. I know very little about tire design, etc. and am wondering what the difference would be if I used 195/70R-14's on this one. Is one "better" th