Hi, im herbert, and i have a dude, I have John deere 7810 4x4, and i have a problem when im working with a cultivator, the tractor skate too much even with the 4x4 and the 4 tires in the rear, so im planing to put other 2 tires on the front (4 tires on the front), but im not sure if the problem will be solved..So if you can help me, ill appreciate .. Thank you