What is the liability if a friend rides my son's dirt bike?

I agree with you JM, but this one has other issues to consider. It doesn't mater if it's a motorcycle or bicycle. If you allow some one to use it and they get hurt you are liable. Luckily most cyclist won't send their lawyer after you, but beware there are some that will. Make sure if you do let someone ride your bike you know what your insurance will cover.

hard to determine without more information. If they are riding on your property with your consent, you could be liable for any injuries the other child incurred which might have reasonably been prevented through normal parental oversight.

If your son has a bike and takes it to land you do not own, and he lets his friend ride it without your knowledge, then you have less liability exposure, since you were not in a position to prevent the injury.

I would recommend not allowing another child to ride your son's bike, especially not on your property or with your knowledge. We live in a very litigious society unfortunately, and you never know when someone is going to sue you and win an outrageous settlement with a soft jury.

find a RELEASE AND WAIVER OF LIABILITY,
ASSUMPTION OF RISK AND IDEMNITY AGREEMENT online and modify it to your cirsumstances if hes 18 or older have the friend sign it, if hes younger have his parents sign it
with the sue happy people now days im sure they could find you liable if your son is under 18 they are expecting you to be supervising so you cant play the i didnt say he could ride it card

if your son is 18 or older he will be the one getting sued

i let my friends ride all the time but i dont expect anyone to sue me i mean, its possible .. but i doubt it will ever happen .. heck just slap a ride at your own risk sticker on the gas tank n tell his friends to read it before they ride ..

MOTORcycle? This isn't one of it's sections. Not even close.

he falls hes falt he dont no how to ride