JOHN DEERe makes the best quality products, I know this from experience. They have the best reputation too, I think any john deere you buy will be a good tractor, if you buy used though, make sure to check it out good. Or go to www.deere.com.
You can try to see if Woodbury Tractor Cohas what you need.
www.tractorhouse.com offers a selection of used John Deere tractors for sale. Also Equipment Trader Online offers a wide selection of tractors both new and used for sale.
You can use some generic parts on it, but in general it's best to stick with the brand name parts. You can find them for the John Deere 990 at http://www.greenfarmparts.com/John_Deere_Model_990_Tractor_Parts_s/274.htm
16.9 by 30 if the rim is 30 inches
4700 pounds, if the tires are filled then it will be heavier.
John Scotus - bishop of Mecklenburg - was born in 990.
990
Yes it is.
63 percent of 990 = 623.763% of 990= 63% * 990= 0.63 * 990= 623.7
50% of 990= 50% * 990= 0.5 * 990= 495
173.2517.5% of 990= 17.5% * 990= 0.175 * 990= 173.25
990