Hello! I'v been a lurker on this forum for a while now and this is my first post.
The question is; exactly how is the AWD system on my '08 250IS set up? What is the front-to-back torque split, how can that vary under different driving conditions and what type of system is it? Torsen, clutch, viscous coupling?
Can't seem to find a good reference on this anywhere.
Now that the weather here in NE Ohio is getting weird I thought I'd like to have knowledge of what I could expect.

thanks all

 

do you have the AWD already or are you in the market for one? I am close to you and RWD is just fine with snow tires. I was next to a FWD that was spinning as we took off from the light and I was gone. lol...FWD sucks!

If you have AWD I am not sure what the front/rear percentage is.

 

I'm not 100% but I believe it is rear biased. Sending up to 100% of the power to the rear wheels and only sending power to the front wheels when needed.

 

rumors tell its 70% rear and 30% front by default
when slipping it either goes to 50/50 or 70 front 30 rear, i dont remember exactly (prolly still 50/50)

 

i heard it is similiar to the g35.

 

I think this is true as far is displacing power when traction is limited in the AWD IS.

 

Thanks, guys!
I did some more research and found that Road & Track says that it's 30/70, front/rear in its default mode and can go as far as 50/50 when needed.
So what this tells me is that it "acts" like a rear wheel drive car most of the time.

later

 

If you are in the market for AWD, it is the car for you. if you need more power, buy a 350 with snow tires or good all seasons IMO.

 

nah... just move here to hawaii, no snow here ALTHOUGH its kinda chilly here today, 79f(26c) brr

 

Alright Judd,

Rub it in (lol). The past couple of days in the Chicagoland area, it has been brutal. I had the break out my mitts.

 

well i just want it to snow for me to test my car.

 

Dang man, not the Mitts!!!!!!!

 

The ones that have a string that allow them to not be lost.

 

my son wants these back asap

 

Not after I had to wrestle them away from him!!!!