Greetings, I have bought 7 x 17 inches with 205 tires original GM opel sportfelgen lk 5/110, my question can I just pull on it without tuv demonstration etc ? lt letter and bill I have registered only 195er 15 inches and 225 16 inches. knows someone what means the entry .. .. ZIFF.27 GEN.:M4860 0D.M4857 if factory mounted ? Then still a small technical question, my thermal insulation sheet is loose, rattles occasionally in the cold running phase and also rarely in the warm phase, has this sheet really a big use ? Look forward to your feedbacks… THANK YOU