 I have the 2-wheel drive PreRunner with the TRD offroad package and locking rear differential, 4-wheel ABS with electronic brakeforce distribution and brake assist.  All in all, I rate this truck the best-engineered vehicle I have ever owned--a wonderful piece of work. It is sheer pleasure to see the intelligence used in its planning and execution.  But I have traded it in after two years of ownership (for another Toyota) because it is dangerous on slippery roads. I have had multiple spinouts on snow, even when proceeding slowly and carefully. (The only other minus is the mileage, but I was fairly warned, so can't complain.)  This 2WD isn't for snow country. 