Audi Quattro and tyre matching

[blueg33]

Hi

I emailed Audi regarding the need for matched tyres on a quattro and though people would be interested in their response. (I have crossed out names for privacy)

Audi Customer Services said:

Reference: AU-2012/02-022XXX

Re: Audi A6 - VK07 XXX


Dear Mr XXXX

Thank you for your email of 23 February regarding the tread patterns on your vehicles tyres.

I have spoken with our technicians regarding this, and I have been advised that even though your vehicle does have mechanical
diffs, it does need to have the same tread patterns and manufacturer.

It is now an old ruling that the tyre treads will need to be of the same levels, the reasoning for this ruling was because of
the different rolling circumferences, but we have now updated our four wheel drive couplings so that this no longer is required.

I hope that this answers your query, but if not please contact me or one of my colleagues on the details below to discuss
further.

Kind Regards


XXX
Customer Relations Advisor
Audi UK

E [e-mail]

[blueg33]

Thats why I asked them. I was looking for an explanation particularly as the diffs are mechanical rather than viscous. So they have tweaked their advice, but still not explained!

Off topic - Dr G - what is the market like for a 2007 A6 3.0tdi Le Mans Saloon with 88k miles?

[blueg33]

Dr G said:

3.0 Le Mans popular as long as it's a decent colour and has a few bits of spec; saloons are particularly good value right now.

Thanks. I probably need to sell mine. daytona, MMi high, satnav etc - hopefully attractive. 1 owner, full Audi history etc. Great car, but need to reassess the family fleet to teach son to drive. Cars are all auto and I am not teaching him in the tuscan!

[blueg33]

Why would a tosrsen diff see more wear with mismatched tyres, thats the bit I don't quite get. Wheels must be rotating at different speeds a fair amount oif the time. Where I live you have to travel for a few miles before you can find a half mile long stretch of straight road. This means the diffs are working all the time with different wheel speeds