Hello guys, have a question. Would like to add new rims to my Omega B BJ.2000 in 8.5 J x 19 “. At the moment I have the original 17 ” from Opel on it in 5 star optics. Now there are some rims in the room. My favorite would be the MAM Nuvo black polished in the dimension 8.5 J x 19. Now I don’t know which ET I have to consider. The current rims have the size 7.5 J x 17 ET39 with 235/45 ZR 17. Can you give me any help??? Thank me in advance for eur e Effort. Greetings AKI