[ainarssems]

Originally Posted by tintin

Sounds like tosh to me...especially given the lack of a logical explanation. If it helps, I've been running with a pair of Super Sports (front) with PS2's (rear) for both this summer (since June, I think) and last autumn before i swapped onto my 18" winter wheels. They've probably done around £5k miles, with no adverse effects - though they are, of course, performing better than the previous PS2's that I had on the front before.

They are probably just covering their @sses. If they told it's fine it would be just matter of time until somebody crashed, got 'experts' conclusion that accident was caused by different level of grip between tyres and sued them be it individual, insurance company or corporation. That could be very costly for them so it's safer just to tell not to mix tyres.