Use of directional tyre on wrong side, advice by Dunlop quoted here:
www.www.honestjohn.co.uk/forum/post/index.htm?t=66...e
The AA says thsi:
www.theaa.com/motoring_advice/safety/directional-a...l
"If fitted the wrong way round, the tyre won't be dangerous, but you won't gain any of the benefits of a directional tyre.
Incorrect fitting of both asymmetric and directional tyres is a reason for MOT failure too.
Some very high performance cars have directional and asymmetric tyres ? these have to be fitted the right way round on the wheel and on the correct side of the vehicle. "
Edited by jbif on 09/03/2009 at 09:58
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>>im beginning to think they are actually legal going backwards
My guess (NB - guess) would be that they're as legal as space saver tyres. i.e. emergency use only, for 50 miles at 50mph (or whatever it is).
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I've had various cars with unidirectional tyres and different tyre sizes front and back. Some even had different wheel widths front and back. Theoretically you would need 4 spare tyres. In practice there was either a space saver, a can of foam, or the tyres were runflats.
I'm drifting completely off topic here, but I'm sure I remember a derivative of the Citroen CX that had different wheel diameters front to back.
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I believe also that the Honda NSX has different diameters front to back
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Citroen CX that had different wheel diameters front to back.
There was one Bagpuss, a top model with I think a 2.4 litre engine. The front tyres were bigger than the back ones (and asymmetric too I think).
French motorway police, I think in Lyon, used to have special CXs bored out to about 3 litres and tweaked. They could do 230 kph.
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