Ratio between 7.5 and 8 inches

Hello dear forum, I have a question for you, I’m driving at the moment at my Golf 7 – 18 inch 7.5 et45, with 225/40 R18 Since I have now ordered winter tyres with rims, and unfortunately this was only available in 8.0 et45 , with 225/40 r18 Could it get a little tight now with me on the fender, because I have installed a H&R Deep 110mm. Can one tell me how much more of the tires are moving to the fender? There was no big difference about tire computers in netzt.