I have become increasingly anxious, after some recent issues, about not having a spare in my boot. After some deliberation, I have decided against a narrow space-saver and am looking at getting a 16" steel wheel. Here's what I have on my Skoda Superb (3)  SE L Executive ('67) at the moment:-   18" Modus, 8.0Jx18, ET44, 5x112 with 235/45 tyres. (Wheel part # 3V0071498F / 3V0601025J )   Here's what I'm looking to put in the wheel well:-    16" steel, 6.5jx16, ET43, 5x