Plug the Brick back tire.
[QUOTE=plehman;849776]I think I know the answer, but can't say I like it... but do you think this tire is toast? Yes, that is a nail through the tread. Argh.
Would you think me foolish to plug it and ride? Seems to be holding air but that's just sitting through a Boston winter.
1991 K75S rear tire, one year old, Bridgestone. Maybe 3000 miles on it (I have two bikes)
It doesn't look threatning to me. If you don't plug it, and leave the nail in, it will eventually develop into a small leak. I would deflate and do a simple rubber/rubber cement plug with a plugging needle trim off excess rubber, reinflate when you are done, it should be fine. It is square on the threads so it is an easy fix.
Tire plugging and crush washers.
I would not mess with that one, over the next 40 years if you reuse crush washers twice you can pay for that tire. I also have two bikes and have used plugged tires to get home or locally around home for a short time, but my time on a trip is worth a good tire. I even go as far to have a spare 3 spoke wheel that fits either of my bikes with a new rear tire waiting in the pole barn.:dance