Your 'profile' (Aspect Ratio) is a percentage of the tire width. E.g. 200/50 would mean 200mm width of the tire and the profile would be 100mm. (50% of 200mm).
The difference between 45 and 50 for 195mm will be just less of 10mm if my maths is correct... This shouldn't make any difference to tire/arch gap only ride height.
A forum community dedicated to all Corsa owners and enthusiasts. Come join the discussion about performance, modifications, classifieds, troubleshooting, maintenance, and more!