:+1:sorry, but is this a trick question??? A 200/50/17 can only be 200mm wide.
The first three digits (200/) = width in mm. 200mm
the second digits (/50/)= profile or side wall height, but this number is a % of the width. In this case, the profile is 100mm.
The last digits (/17) = rim size in inches. 17in.
Based on your question, i assume you don't know how to read the tire numbers, therefore the above explanation.
I wondered this with my stock Dunlop, it looked wider than the Dragon Supercorsa and DCIII that I run now. What Bridgestone tire are you running that looks like a 180?I looked at them and dunlop has the widest 200 and maybe Michelin, my bridgestone 190 looks like a 180 compared to dunlop and michelin