roadx wrote: are the offroad trails supplied by GT rider maps have enough detail to where a could rent a bike and use the maps and not get lost?
are there enough trails to ride for a week or so? or do a big loop around the Chiang Mai area
Yes, there's plenty of off-road tracks on the maps. And making some great loops is no problem at all.
roadx wrote: do they have gps coordinate's?
No
roadx wrote: how do you rate these trails?, 1 being easy to 10 being expert
A four wheel drive would be able to do most of the off-road tracks on the maps. So maybe 4/10 for a bike.
But if its hardcore single track your looking for, your maybe better off going with one of the tour company's
roadx wrote: my main concern (besides being lost) is riding in areas i should not be in or riding across someone's farm. should this be a concern?
do you think it is wise to venture off on your own in the jungle without a guide?
Don't worry about riding into someone's farm, this is Thailand, they will most likely offer you a beer if you do.
It really is as simple as hiring a bike, buying the map, and heading off.
Just do a bit of research by looking at some of the trip reports others have posted, and maybe look through a Lonely plant guide to work out what sites you what to see.
Cheers. Moto-Rex