And
17) Fit a set of Michelin CrossClimate tyres if you can get them in the right size.
Yes, did this at the start of the year and wish I had done it earlier now. I have found the ride to be more comfortable and quieter as well as stickier in poor conditions. I have also noticed that the car doesn't 'tramline' on the roads it used to when damp. Wouldn't venture out in snowy/ icy conditions if there was too much salt on the roads but am looking forward to motoring through the year as always safer in the knowledge that the tyres can cope with the conditions.