Question for all 4x4 owners...

Do you use normal or XL (extra load) tyers?

Is it GoodYear 195/65 R15 GY ULTRA GRIP 8 91T M+S good for Octavia Combi 4x4, 2005?

I use reinforced tyres based upon the advise of the dealer.

Question for all 4x4 owners...

Do you use normal or XL (extra load) tyers?

Is it GoodYear 195/65 R15 GY ULTRA GRIP 8 91T M+S good for Octavia Combi 4x4, 2005?

Not able to answer you regarding the GoodYear tyres, but my winter tyres are Nokian WR G2 XL, 205/60 R15 95H M+S, and I've found them to be very good. However, my summer tyres are not XL but I will change these to XL when they need replaced.

I use xl tyres on my scout as I often do motorway trips with the car fully laden.

My 4x4 Scout come with standard tyres (Dunlop SP Sport 01), not extra load version.

Since these tyres are available in XL but Skoda chose the non-XL tyre then I stuck with the standard ones.

XL 98 load, Y speed summers 225/50/17 ContiSport5, normal winters 205/55/16 on steel rims Conti TS 810. Thought normal Scout is on 94 load index from factory.

Hey,

here says that in Generation 2 of Haldex is always on, works like this: Under normal driving conditions (driving at the constant speed, no silppage), the torque distribution is 90/10 front to rear. When the clutch is locked, torque is evently distributed between the axles (50/50).

So, in normal conditions torque distribution is 90% on front and 10% to rear?

Link: http://www.awdwiki.com/en/haldex/

No, it doesn't. But it does have 4 wheel drive when it needs it.

So, in normal conditions torque distribution is 90% on front and 10% to rear?

My understanding of Skoda's implementation of Haldex Gen 4 is normal driving is 96% front 4% rear except for when it's pre-empting hard acceleration.

He has a Haldex Gen2. You are right about Gen4. As far as I know Gen2 does 100% front, and rear only as needed when front lose grip.

Get on the snow, have a friend stand outside whlie you drive in a safe place and test the car with TC on/off, fast start, slow start, reverse slow, reverse fast, etc, play around and see how your Haldex behaves. Pozdrav

Hmmmm,

I asked local general dealer for Croatia, and he told me that, and explanation 90/10 is on link....

My understanding of Skoda's implementation of Haldex Gen 4 is normal driving is 96% front 4% rear except for when it's pre-empting hard acceleration.

I will, cant wait for snow anymore

Pozdrav iz Hrvatske

He has a Haldex Gen2. You are right about Gen4. As far as I know Gen2 does 100% front, and rear only as needed when front lose grip.

Get on the snow, have a friend stand outside whlie you drive in a safe place and test the car with TC on/off, fast start, slow start, reverse slow, reverse fast, etc, play around and see how your Haldex behaves. Pozdrav

Here are some useful informations about Haldex....

http://www.borgwarner.com/en/default.aspx

Here people says thats in normal conditons is 90/10 front to rear... http://forums.vwvortex.com/showthread.php?266930-Haldex-vs.-Torsen

Here is nice video from 2007.

This should be Haldex 2?

Here is in normal conditons 90/10 front to rear.

That is a very good demonsration of the fact that there is no drive to the rear wheels until the front wheels start slipping.

Hmmm isnt here in normal conditions drive on all wheels all the time, but front 90, rear 10% ? There is drive on all wheels on last movie (green Octy)?

Look at the wheels carefully and you will see that the back wheels don't start turning until the front wheels have rotated by about 50 degrees (or 1/7th of a full rotation). That is how long it takes for the Haldex 2 fitted to the Octavia to react to front wheel slip and to start distributing power to the rear wheels.

But the front wheels haven't lost traction.

I too believe it is a 90:10 ratio.

Surely the slight delay is simply the pick up of tolerances in the drive chain...

The front wheels are off the ground so there is no traction, ie frictional force between the wheels and a surface they are in contact with.

I wasn't sure how the car could detect wheel spin or loss of traction, is that how it works then?

I wasn't sure how the car could detect wheel spin or loss of traction, is that how it works then?

I would assume it will use the abs sensors to compare the rotational velocities of the front wheels and back wheels and if front wheels are turning and back aren't it will start switching the power around. I believe it also works side to side as well so essentially one wheel spinning or three wheels spinning will also cause drive to move to the wheel(s) which have grip.

Electronic Differential Lock EDL allows the slippery road surface safe and comfortable movement. EDS brake wheel skid so that the other wheel on the same axle can transmit more power to drive the road. By reducing the slip effect is also reduced tire wear on the drive wheels. EDS is automatically up to 40 km / h (for cars with quattro drive up to 80 km / h). However, it is automatically turned off at an unusually heavy load before the disc-brake wheel ko?enog overheated and came to the risk of weakening the braking effect (fading). The vehicle can still drive the action without EDS (EDS functions independently to activate the cooling phase.). Electronic Differential Lock EDL is an integral part of the electronic stabilization program ESP on all models which includes the standard equipment.

I agree with you.

In the first video, front wheels havent lost traction, and rear works at 10%.

But the front wheels haven't lost traction.

I too believe it is a 90:10 ratio.

Surely the slight delay is simply the pick up of tolerances in the drive chain...

Honorary, In the first video, front wheels havent lost traction, and rear works at 10%.

I asked local dealer and I told them what car I have, with haldex 2, and they told me: "On your car is a Haldex clutch, which automatically determines the facility depending on the drift of the individual wheels.

On this vehicle is a constant drive to all four wheels, 48% front left, front right 48%, 2% back left and back right 2%."