There is now an alternative to the 16" Conti, if you google it you will find it. I had an offside front sidewall split on me on New Years Eve this year, all I did was to slowly roll up a 3" kerb and the bugger opened up like Kermit's gob. The interior was really dry and crusty looking too, perhaps Nissan have the wheels and tyres fitted and kept in storage long term until they have a car to fit them to. Anyway, Kwikfit at Hounslow were really on the ball, fitting a new boot (Conti) in less than 20 minutes with a minimum of fuss and bother. I was back on the road within an hour of the split occurring, and that included putting on the space-saver,phoning KF to check availability, and driving 3 miles to the depot! The boys were so good I slipped a pony in their tips box...excellent service and on a day when they would rather have been at home I'm sure!