Best dirtbike tire for extremely rocky terrain

[TCMwonderful]

I am an intermediate rider who just moved to an EXTREMELY rocky area. My back yard is a steep rocky hill which i have carved a crude switchback trail into. I have an '88 XR 200r which i have been riding in fields and woods trails for years. The dual sport tires i have on the bike now just wont take the rocky ground i am now faced with, but i really want to ride my back yard. Any suggestions on a good tire set i can scoop to concur the rocky road? I am trying to keep cost down, but anything advice/ suggestions that will help me climb this hill would be greatly appreciated - thx

[Mtnseeker1]

If this is Utah or close invite me I help you dig it ?dig it?
Better still come ride tsome stuff I have put together It may help.
PS trade the dual sport tires for semi sport tires(trials /enduro) OR? just raise some real hell with hard nobbs.
So is this a 19 or 18 rear and 21 up front I'm sure. 18 on the old XR seems right.

But the year suggests an 17 if memory serves me and it never does.