I would like to start off by saying how much I like our RX. I've said before, that I think it could be the perfect car for our purpose.

I have noticed that when driving in snow, or icy conditions, the RX would simply prefer to continue in a straight line, when I want to turn a corner. It feels like a REALLY bad case of understeer (pushing). I've been driving in snow for a long time (with NO accidents or mishaps), so I'm pretty comfortable that I know how to make appropriate adjustments for slippery conditions, but this seems extreme to me.

Both our 2010 and our 2013 RXs have shown this tendency, and both had/have the OEM Dunlop tires. So, I'm wondering if my issue is with the tires rather than the RX.

Anyone have an opinion?

 

I have snow tires (255/55R18) on mine and do not have this issue. Best investment for poor weather.

When cornering, the rear wheels get some power routed to them to aid the turn.
If I take the corner too hard (on purpose), the VDIM does its magic to point the car where it is intended to go.

 

Mine understeers a bit if I take corners too fast, I just have all-seasons on. The RXh is heavy! Takes a lot more force to get it to change direction. With all-seasons, you just have to accept the fact that braking requires a lot more distance and cornering must be done at a slow speed, especially with AWD creating a false sense of how slippery the situation really is.

Winter tires are the answer.

 

I haven't had the issue, but I disliked how my 2006 400h handled on wet pavement or snow. I prefer the 350 AWD version.

 

Its not the tires. I have the dunlops and don't have this issue. My car seems to be pretty damn good in snow. Especially compared to my 2005 RX300

 

The Dunlops were fine for me too. They got me through some nasty storms. That being said, there is a bit of slippage that goes on from time to time. Happened this morning while slaloming down the hill after hitting an icy spot. But the 450h corrected itself immediately. The Pirellis haven't been tested enough to see if they are better. Snow has been sparse this year. The RX has always had a quirk with turns. I just compensate for it by slowing down.