Out in the snow on the road behind my house (dirt road) trying to park by my gate I got lots of rear tire spin trying to get into my parking space

Why would I get rear tire spin if the car is AWD?

 

No clue, but the vehicle is 40% front power, and 60% rear power

 

I was used to driving a truck that if I got stuck in the snow and stepped on the gas no wheel spin

 

AWD is limited by the traction of your tires, just like 4wd or 50 wheel drive. Unless you have DSC your wheels will spin if the tires can't hook up. This doesn't mean you can't get it going, it just means your tires are not biting much.

I have an 02 and prefer the early version of AWD, I'll spin the tires but all the wheels drive.

I have a few big SUV's. We have 35" of snow. I have been spinning plenty of tire, even with aggressive AT's and MT's. I"m not sure what truck you have that doesn't spin a tire.....

 

I had one of those k5 blazers - 1994
also had a newer suburban
lock those bad boys in 4wd its good to go unstoppable

 

Yep, the K5 was a good truck. With some lift they are very capable too. The problem around here is high centering on the snow. Even with 33" tires and 3" of lift on the Jeep or my airbags up the whole way on the Rover, I can't get my front bumper high enough to clear the snow and not high center, and eventually lose traction. The leaper on my X would be about level with the snow right now.

Anyway, you get the point. Your X is not going to be as capable in those types of situations as a heavier truck with more ground clearance, probably more aggresive tires, etc.....

 

I have never had a problem, but I've heard that under certain conditions, you may lose traction and drive to the front wheels...Try applying slight parking brake action and see if that forces the front wheels to take a hold.

 

only 2002-2004 x-type are 50/50 power split. 2005-2008 are 40/60 split which you want a x-type with DSC on 2005 up types

also if you don't has DSC you don't have traction control so yes your X-type is driving normal in the snow.

 

This is not correct. All years have a torque split of 40/60, (not power split) the early cars have a limited slip centre differential, it is referred to as a viscous coupling (VC) . Later cars have an open centre differential.
I am sure that everyone has experienced a 2wd car with one spinning wheel, this is the work of an open differential. Any awd car with open centre and front/rear diffs will still get stuck if ONE wheel is on wet ice. You need either a limited slip differential or traction control to let some torque get to a different wheel.

DSC is used only once the car is in motion, and applies brakes to
an appropriate wheel to help the car follow the intended path (where the steering wheel is pointed) ie when you are drifting, over or understeering.

Traction control is different and will reduce power, then apply the brake to stop a spinning wheel. It is a cheap alternative to a limited slip differential.

Without TC or LSDs, you will still get one wheel spinnig.

 

a co-worker recently had something changed in his X-type's computer, because it was not sending out the signal to put power in the front wheels when the rear wheels spun. he said, he basically never had a AWD X, till after whatever they did with it

the X doesn't have all time 40/60 distro, it is only when the rear spin, power gets transfered to the fronts

 

sorry to say wrong again...
the front and rear drive of the x-type is permanently mechanically connected via a planetary centre differential. It divides torque 40/60 all the time. There are no wires and nothing electrical connected to the transfer case. No computer can change the fact that the system is mechanically connected.

Now, the basis of open differentials is that if one wheel is on ice, it spins easily, that means it takes almost zero torque to make it spin. THe torque split is based on this torque. On a 50:50 diff, if one wheel is spinning with almost no torque, then the exact same "almost no" torque is applied to the other wheel.

the jag has typical 50:50 open diffs at the front and rear.
THe transfer case is just a fancy name for the centre differential. It is set at 40% front 60% rear.
so when the rear wheel spins with little torque, the front gets LESS than the same amount of torque. so there is really not much going to the front when a rear wheel is spinning on ice.
If you have a limited slip (VC) Transfer case, then there is some torque needed to turn the VC when one wheel is spinning. It is this torque generated by the VC that is now divided in a 60:40 way and allows some torque to go to the non spinning axle.

later cars dont have the VC. instead they have traction control (NOT DSC) , that applies the brake to a spinning wheel, and that creates torque, then the transfer case has some torque to divide up and send some to the other axle.


Is this ever going to make sense? Probably not as long as the dealers keeps perpetuating the lies @!!!!!!

 

Wow Jimmy, put very nice. right on the money. I see you know your stuff, heck i remember when you were new on here

 

haha... but do you remember who I was before I was banned? lol I woulda been a veteran by now too!

 

So why did you pick "jimmy" for your handle this time around anyway?

 

In tribute to the person who banned me of course! I thought it was fitting.

 

LOL I didn't even make that connection!

 

LOL. so much for my inside joke i see it is public knowledge now huh?

 

lol that makes no sense. You need awd the most when starting out. All I know is my 03 is excellent and has the VC.

 

This thread is LOL