[s-cars] Mixing asymmetrical tires with normal tires

joeamund joeamund at online.no
Wed Nov 13 08:21:59 EST 2002


Robert!
Mixing  assymetrical with normal is no problem, but you are not sure the
rolling circumference is the  same, even if the tyre has the same dimensions.

Last year I was struggling to get som new rear-tyres(325/30-ZR18) and wanted
to step up a bit on the front to 265-275/35-ZR18. I had to choose between
Pirelli and  Michelin and to my suprise Pirelli had 4 different pattern to
choose between(Assimetrico,Rosso,Nero and a fourth I do not recall the name
of). What surprised me was that all had different diameter(and of course
circumference) with as much  as 10mm on the  diameter, all on  the same
265/35-18 dimension! I called the  tech dept at Pirelli and  yes the guy told
me  that they were different because sometimes the
factorys(Porsche,Merc,Audi) required special sets with different dimensions
front/rear for their cars. His advice was  to roll each tyre one revolution on
 the  ground  and then measure, to get the best ones for our quattro systems.

I am not saying you are in trouble Robert,  but I would propose a measurement
before closing  the  deal. Please give  a feedback on the result.

Best regards Joern,MTM RS



>===== Original Message From <Robert.Welch at TechnologyCrafters.com> =====
>Mixing asymmetrical tires with normal tires
>
>I've found a deal on a nice set of Pirelli 210 Winter tires.  However, 2
>of them are asymetrical and 2 are 'normal'.  They are all the exact same
>size, so I presume they should work well.
>I'm curious if I should anticipate any problems in putting these to use
>with my AWD S4.
>Anyone have any experience with this kind of issue?
>Thanks,
>
>Robert W
>Golden,CO
>93 S4
>95 s6
>
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