Iplayfarmer
Super Member
For some reason, my trailer decided that today was fishtailing day. I've had it loaded before with a similar load (2 tons of hay), but this time it would start to sway back and forth if I went any faster than 50 mph. In the extra 15 minutes that it took me to get home I found myself wondering why that happens. I know I've heard it before, but I've never really understood. Why do trailers fishtail?