With the addition of 4x4 i almost had a rollover last year . I always used a 8n to do blade work and a 3000 for fel work 2wd .I had my tc40d trying to move alot of concreate and rock off a yard .The rock was as big as basketballs or bigger the tractor pulled me up and over with no slip somehow i hit the hst pedal and it pulled me out of the roll over .The 8n or the 3000 would have spun a tire against a rock this big but the 4x4 pulled me right on over it .Just a thought when working with 4x4 tractor's around large object's.This happend in a split second with no time to react.I thought my tire was past the rock but with the wider tire's i did't see it coming. I was lucky this time .My dad alway's warned me not to run over rocks on a hillside but on level ground i was'nt watching close enough. Take time to get used to your new tractors they operate different and can achive alot of work.There not just like the older one's that's good and bad .