tyre on back to front...how much difference will it make?

[V8ish]

I have two spare wheels with matching tyres but they are both for the same side. If I put both on the back does anyone know how much difference it will make for a novice trackdayer?

Cheers

[dreamer75]

Personally I wouldn't... water clearance won't be right so if it rains it could be dangerous, and some tyres can de-laminate if you run them wrong (or so the story goes).

Just pay Kwikfit (or better still a local independent) to swap the tyre onto a wheel for the other side of the car.

[Jubal]

What tyres are they? I once complained to a tyre manufacturer about how poorly their tyres had worn at a trackday and they suggested putting them on the wrong way round to even up the wear. But this was a semi slick so no tread blocks to squirm around.

[softtop]

think about the asymetric tyre, the tread is 'right' on the outside on side and 'wrong' on the other, they still seem to work ok??

[dreamer75]

And designed to work that way...

[Nords]

You get normal, assymetric and directional tyres. Only directional need to go around in a certain direction. It will be marked on the side so check that but as a rule of thumb, if you have a V type pattern on the tyre it is probably directional and care must be taken when fitting them after a trackday 4 wheel swap for instance. Normal & assymetric can go on either side...