I will be purchasing new tires in the rather near future and I am curious as to what kind of results those of you who are weathered in the Z31s have had. First off, what are the widest tires I can put on my stock wheels(shiro) front and back? Also, what series of a tire have good results? I am not so concerned about ride comfort, but I also don't want to go so thin that there is a bunch of wheel gap. So what do you think is a good medium? Any input or experiences you have had with certain tires would be appreciated.