Hi folks

 

A friend of mine has a 2007 octavia 4x4, due to a puncture, she needs 1 tire, but we are gonna change both on the same axle.

I been doing some reading and it seems the haldex is more forgiving when it comes to tire diameter than cars with permanent 4x4. Does this car have permanent 4x4 or is it 4x4 only when detect wheel spin for example?

 

Reason for asking is the diffrence between 2 new tires and the two old, the old ones have 6mm depth and the new ones 8, will this cause a problem on this car? if not, does it matter on which axle we place the newest/biggest tires?

 

Thanks in advance for help

 

 

 

You will be fine, the vehicle effectively runs in 2WD mode unless more traction is needed or pre-emptively thought to be needed, even when its 100% engaged it periodically disengages momentarily to prevent any transmission wind up.

 

Having different diameter tyres on either axle is compensated for by the relevant differential, if you are concerned about the front to rear difference which you should not be, then changing only one tyre will create less imbalance than changing both.

 

All irrelevant anyway because as soon as the vehicle trajectory is anything other than straight ahead there will be a front to rear imbalance

Thank you for the answer.

 

That was what i was hoping to hear, but i wasnt sure how it works on this car, but then i know.

 

Cheers