Re GSD3s Mine arn't XL.
No pro tyre dealer will fit a supply or fit tyre which is unsafe for the car!
They work perfectly.. as tested on track (Bedford Autodrome GT) by me recently! End of.
Was just looking for some info on tyres & noticed this thread. It mentions the lcr but not the normal Lean Cupra - does anyone know if you need to use the XL tyres on the Leon Cupra too? if so the Good Year tyres that i was about to buy in 225/45/17 are not xl ones