Kahuna said:On the 06 HPX and the new XUV I wouldn't think leaving it in 4 wheel drive would make it eat up tires because it is an "on demand" system that only engages when the rear wheel sense a slip. Looks like I better keep the stock tires on this to avoid axel problems. I'm the type to add more dealer options rather than trying to modify the original design. However, if they ever come out with a chip or programmer for the XUV I might give that a try.
I think it's always "on" when you have it in 4wheel drive it's just the front dif isn't locked all the time and thats the "on-demand" part you are thinking about.
On a weird note I was in 2 wheel drive awhile back with the back dif locked and spinning both tires when the front end suddenly kicked in. How the heck does this happen ? The switch was still on 2wd and everything but it all of a sudden went into 4wd...