Hello, I am a bloody beginner and have the following questions for beginners: 1. Aitbag steering wheel. does the car automatically have an airbag if it has this impact bag? Did the C4 without airbag and only this procontent have this steering wheel with the struts installed? 2. Winter tires: Need unedited winter tires. Thought I’d pick up some directly on rims; selection is huge. In appearance, however, only 15 duty wheels with 215 are registered with me. Wanted at least 16, rather 17 Zöll he. Question: many org. Audi rims are offered in the bay. Could you give me common rim sizes and tyre sizes, which I get registered for the C4 or there is an ABE? Unfortunately, the sellers usually don’t write anything about it. 3. Topic white indicators: can I buy these without hesitation from any seller or are there any differences? Is there an installation instruction? So, that’s it for the first time. Thank you for your help!