[s-cars] help w/ the 'real deal' on cross-rotating tires?

[LL - NY]

Personally, particularly with block tread tires (which will feather) I will
try cross rotation (or the bring the rear wheels forward, then cross the
former fronts) whenever possible.  Fortunately directional tires seem to not
suffer too much from feathering, at least the way I drive which is to
apparently wear them down so fast that rotation seems unnecessary (i.e. they
wear out so fast that they never make it to a rotation interval between the
seasonal changeover).

LL- NY -  Merry Christmas All!

On Fri, Dec 24, 2010 at 12:56 PM, JC <jc at j2c3.com> wrote:

> Gentz:
>
> What's the modern view on cross-rotating radials?  Leaving aside
> directional
> tread tires for a minute, I've always been steeped in the theory that once
> you run radials in one direction you don't want to reverse them and so you
> always same-side rotate.  However I see stuff on teh inertwebz suggesting
> this is outmoded BS from back in the day and overcautious geezers like me
> should shut up and take our meds.
>
> Victim in this case is wifes A3, which has OEM P6's cupped pretty nicely on
> the rear (datapoint: those apparently known to do that... also alignment
> has
> been stealer eyeballed and pronounced "not a problem" so pretty strong
> evidence it's P6 design issue).
>
> The suggested solution I'm getting is that when they go back on for summer,
> we cross-rotate the cupped rears, and they'll wear back to something
> approximating flat - or at least better than what they are now.
>
> Thoughts? Is "never cross-rotate a radial" a 1972 rule of thumb that I can
> discard?  No problem to run them in the opposite rotation?
>
> The S & M cars all get directional tires so I haven't even had the
> possibility to consider it until now...
>
> JC
>
> ---- current ----
> 1995.5 S6 Avant
> 2003 E46 M3 Cic
> 2008 A3 2.0tDSG
> ---- past lives ----
> 2006 A4 2.0TQA
> 1998 A6Q 2.8 PES G2
> 1989 200TQA SJM
> 1990 CQ
> 1997 A4 1.8TQ Wett
> 1987 4kCSQ
>
> John J. Cunningham
>  <mailto:jc at j2c3.com> jc at j2c3.com
> US Mobile +1 (617) 750-5025
> China Mobile: +86 (0) 136 8175 8180
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information
>