All things being equal, the OEM 200/50 size tire is going to provide slowest/heaviest handling and the least traction, than any other tire designed for it's 6" wheel width. All things being equal, a 180/55 size tire would provide the quickest/lightest handling and fastest acceleration, while still providing much more cornering traction than the OEM 200/50 size tire. All things being equal, a 200/55 size tire would provide the most cornering traction, the slowest acceleration, while still handling quicker/lighter than the OEM 200/50 size tire. And all things being equal, the 190/55 would fall right between the 180/55 and 200/55 in terms of acceleration and cornering traction, while still handling quicker/lighter than the OEM 200/50 size tire.