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RE: Replacing tires on quattro
The following assumes non-torsen diffs....
If you have different size tires on the same axle, the diff on that axle
will turn more, not necessarily a bad thing because that's what diff's
do. If you lock that axle, then you are stressing the drivetrain. If
you have 2 same size tires on the rear and 2 of a different size on the
front, then your centre dif will turn more, again not a bad thing
because that's what dif's do. But, if you lock the centre diff in this
scenario, you will put a lot of stress on some driveline parts which
most likely would lead to breakage.
180 Yorston St
Williams Lake, BC, V2G 3Z1
'86 5KTQ stock (if you don't know what it means, you aren't in the club)
>From: Trey Donovan Drake[SMTP:firstname.lastname@example.org]
>Sent: November 10, 1999 1:09 PM
>Subject: Replacing tires on quattro
>I have an 85 4kq and I just replaced the front tires, but not the rear
>ones. One of the front tires had been damaged so I decided to get an even
>two for the front, but the rear ones are not badly worn, only 10k miles on
>them and plenty of tread.
>The guy trying to sell me tires informed me that it might be harmful to
>the transfer case to have dissimilar or older tires on the rear, and that
>I ought to replace them all at once. Is this true, even if the rear tires
>are in pretty good shape?