Look at wheel and tyre packages on mytyres. The last set I bought from them were for a Mazda MX5 - four tyres fitted would have been £240 or so, I got the same tyres fitted on some presentable looking alloys (Enzo W) for about £440 IIRC. It wasn't worth looking for a decent second hand set. whoch would have been no cheaper in all probability. They supply them with spigot rings if required.

Previously I have also bought a set of all season tyres on steel rims for winter use on my Outlander from them.

They arrive in about a week, from Germany.

Isn't the Mazda 3 a Ford Focus in drag? Any wheel and tyre combination from the Focus should fit. 40-profile tyres on British roads? 'I've given my thoughts on that before! Appen you live dahn sartf where's there's more money for road repairs, but the holes and bumps up here would break your wheels - and your back. Ideally for winter in the Pennines, you need the smallest wheel and deepest tyre, but I've driven around many a four-wheel-drive BMW or Audi which manages quite well spinning its big, wide wheels and sliding around on the ice. I don't like to slide around like that, so I drive a little front-wheel drive jobbie and drive around them. Unlike me, you probably like your car to look nice (whereas I don't give a whatsit) so rather than go to the smallest wheel, which I believe is 15" on the Focus (look either in the handbook or for a small plate at the bottom of the passenger door pillar which has all the approved wheel and tyre combinations and the respective tyre pressures) why not get a set of 16" and a set of Vredestein Quattrac all-season tyres which are very good on snow and ice, and you'll find them so much more comfortable and drivable than the silly wide 40-profile that I'll bet you keep using them all year!