The John Deere 9630 is an agricultural 

tractor model manufactured by John Deere.

It is one of the largest production tractors in the world,

and was the largest made by John Deere upon

its release in 2007 until the end of its production in 2013.

[1] The 9630 has a 530-horsepower

(400 kW) six cylinder diesel engine that displaces 826.7 cubic inches (13.55 l),

and was tested at 427 hp (318 kW)

on the drawbar (53,666 lbf (238.72 kN)

max pull on the drawbar).[1] 

The 9630 is an articulated tractor,

coming stock with eight equally sized tires,

duals in the front and back.

Its ballasted weight ("loaded" tires, wheelweights, etc.)

is over 25 short tons (23 t).