What is the weight difference between the John Deere 7R 330 and 8R 340 Tractor?

The John Deere 7R 330 has a weight of 25133 lb. and the John Deere 8R 340 Tractor has a weight of 28000 lb., a difference of 2867 lb. The John Deere 8R 340 Tractor has the higher weight.