deaf_rattle wrote: even on rwd i would put the better tyres up front.
Of course you would. One doesn't have to be a Rhodes Scholar to work that out.
Any tyre shop that recommended the reverse ought to be shut down. They're simply not qualified to offer advice.
On a FWD car the front wheels provide the traction, the steering and the braking. Of course in this set up you'd fit your best tyres to the front - where the action is.
In a RWD car only the traction is transferred to the rear. This is the least important of the 3 tasks and not enough to justify any other setup.
It's long been believed that the 'average driver' handles understeer better than oversteer. This is because simply lifting off the throttle neutralises the understeer and brings the front around.
What the theory doesn't allow for is the fact that the 'average driver', having overcooked a corner, actually leaps onto the brakes. This serves to lock everything up and accentuate the understeer thereby causing the car to leave the road or cross the centre line.
Having the tyres with the least grip on the front will only exacerbate this problem.