Moron.
It depends on the facility or yard, the route, route miles, track condition, stress, number of miles on the car set, and builder and so on and so on. Besides, buffoon, most subway cars are built for thirty years of service anyway. You should expect to get a few extra years out of them. If you don't get thirty or more years, you've purchased a lemon. I don't really see what's so good about your R32 anyway. So what it's faster? It's governor may be weak. A railfan window? Can't get from point A to B without one of those (note the sarcasm in case you missed it). And they look good, wow. Most subway cars look like twinkies on wheels to me anyway, so that's just a matter of opinion, as are most, if not all of your arguments. So give me a break jackass. I don't even live in NYC and I can use some common sense judgement about subway cars.