I run a 14' head on a 2550 new Holland and a 12 wheel Sitrex just like the one Dave9110 posted. It just barely covers it when I lay the hay out as wide as the mower will lay it out. No way a 10 wheel will cover 2 14' swaths. Now if you narrow up your windrow to 4' a 10 wheel may work fine. 12 wheel would be the min I would consider