Earlier (maybe in some other thread) I said I was going to always use 4A and referred to the Weather Mode as Nanny Mode. After some serious storms here in the mountains at 6500 ft elev., driving mountain passes at 8500 feet, blowing snowstorms that slow most drivers to <5mph, variable roads full of sheet ice, slushy snow, melted snow, etc etc I am sold on Weather Mode. Here are my observations: Does it dull throttle response and sometimes make you wonder if the truck is ever going to move? Absolutely. Can you "out accelerate it" in 4A with your own foot? Not likely (or impossible) in bad conditions. When the roads are not so slick, or dry (when you really don't need weather mode) then 4A is great...and can make things more fun (^ no need for the WalMart parking lot). In fact, when they're dry 2 Normal works just fine. But I will guarantee you this (remember I was a total skeptic 2 months ago), in sloppy, icy, nasty, variable conditions (most of our winter here) no one will out accelerate my Raptor by driving their Raptor with their foot in 4A! The system's sensing of wheel slippage (and yaw/gyro??) makes this thing a rocket all while inspiring a pretty good amount of confidence that no matter what you do, it's not gonna get overly sideways. It is Baja Mode for ice. Almost daily I have to pull out onto a highway that can have heavy traffic, an ice filled road at the stop sign I'm starting from and usually not great conditions on the highway. I have slipped into tiny holes in traffic like I would in summer conditions (much to the surprise and probably a bit of anger) from those I'm slipping in front of...but it is so predictable and gets it done every time. We also have an Audi Q7...that AWD system makes so much noise it's not even funny...and comes no where close to kicking in like the Raptor does. I've got a set of DuraTracs I ran on my Gen1 sitting in my garage waiting for my lazy ass to bolt them on my truck...but I've put it off cause even with the stock tires I've been pretty satisfied...never thought I'd say that. If you choose the right mode for conditions you shouldn't have a problem. My only annoyance is when we are in a low pressure system for a week and you know all the roads suck...you still have to choose the Mode every time you leave the garage. Wish it held the previous choice. FORScan??