What is the wheelbase difference between the John Deere 6R 180 and 6R 185?

The John Deere 6R 180 has a wheelbase of 110.2 in. and the John Deere 6R 185 has a wheelbase of 108.8 in., a difference of 1.4 in. The John Deere 6R 180 has the higher wheelbase.