I’m getting used to my z4 after a couple of weeks. I was worried about it ‘rail roading’ so had a tyre check. Total mess some run flats some non rfs so did some research and got 4 new tyres- non rfs. Local tyre shop I have used for years recommended Lassa Driveway sport. Basically a Bridgestone. Wow what a difference the ride is awesome and now realising what all the z4 fuss is about! Next challenge is auto door mirrors, they fold up ok but only the drivers door folds back down? Any advice welcome, roll on spring time.