I run a 2008 Maserati Quattroporte in Spain. The tyres are needing replacing and as I am due to do some driving in Northern Europe this winter I was going to fit winter tyres shortly. Any problems that I should be aware of using winter tyres not in winter.

My supplier can source Pirelli Sotto Zero 3 for the rear with the same specs, but only Sotto Zero 2 91V for the front. Alternatively the supplier can get Vredestein Wintry Xtreme with the 91Y rating - would I be better fitting these?

On return fromplace them every 8-9000 miles). I would put PZeros back on the rear and keep the winter tyres on the front. Is that advisable?

Thanks in advance for any advice you can give.