What is the weight difference between the John Deere 8R 280 Tractor and 7R 290?

The John Deere 8R 280 Tractor has a weight of 25800 lb. and the John Deere 7R 290 has a weight of 25133 lb., a difference of 667 lb. The John Deere 8R 280 Tractor has the higher weight.