I have a honda civic with Bridgestone Turanza something or others on them. The tires have slightly more than 20k miles on them. I recently had a nail and associated slow leak in a rear tire. By the time I noticed the leak two or three days later the tire had about 15 or so psi in it (I know, but it really didn't look visibly low). The nail was pretty close to the sidewall. It was still through the thread, but maybe a quarter inch or so from where the thread ended.
The place I took it to patched it and warned me about its location and to keep an eye on it in case it starts leaking again. I've been thinking and given that car tires are pretty important, maybe I shouldn't be too sketchy about this. If I were to buy new tires, do ya'll have any opinion on just replacing the back two? Internet research tells me that's common and to put them on the back, which is where they'd go anyways. Since it's so desirable to have the new treads on the back, and the front are 20k miles more worn, would I ever even rotate them again?
Also, should I consider just getting four new tires? That would give me a chance to change tire types since these are OEM (they were replaced once before, but with the OEM again for reasons I don't recall). Is that being unnecessarily wasteful with only 20k on the front tires (and I rotate them regularly). Am I being unnecessarily wasteful in the first place by distrusting the plug?
If four tires is a good idea, does anyone have any tire recommendations?