Stephanie's dad always used to refer to new car tires as "new shoes." After 67,000 miles, it was time.
Plus I needed to replace the transmission fluid (yeah, it shouldn't be brown). And my alignment was pretty whacked. Plus I needed an oil change. By the time it was all said and done, I spent $600. Ouch. I have to remind myself that this is the only maintenance I've ever done on the car in 67,000 miles though, so I suppose in that perspective it's not a big deal.
I also didn't want to buy some crappy tires that I'd have to replace in 20,000, because I'd like to double the mileage.
I hate spending money on cars, but I suppose this time I just have to suck it up and know it'll be a long time before I need to do it again.