your 4runner is perfectly capable!
i just returned from death valley this weekend and found the limitatitions of my stock '02 2WD.

 

Hey dont feel to bad man....at least you have 4WD....some of us (very few) are running around out there with 2WD....Like me.

 

I have to agree with everyone here and say that your Runner is fully capable as long as you take your time, pick your lines, and don't be wreckless. Someone said once about the prowess of stock suspension of a stock Yota is that it'll be a while before your driving experience will surpass the rig's capability..have some fun and invest in good tires.