Good day, I got a new BMW X5 (E70) in the summer. It has 255/50R19 front and 285/45R19 rear summer tyres on it. Now I want to buy winter tyres. Only the smallest rims in the size 18 costs 2,000,- €. Why do you usually change the complete wheel? I have to make winter tyres on it on the existing rims and then in the summer again the summer tyres on the rims. What does not speak? I see only advantages: 1. Do not need additional tyres. To buy rims, but only winter bikes. 2. I can ride the beautiful aluminium wheels even in winter. Changing the tires can not cost the world