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If you mean 195/45/16 then that will be similar but a bit bigger overall than a 195/50/15.
195/50/15 = 576mm rolling diameter
195/45/16 = 581.9mm RD
A 205/45/16 would be even big still but not by a massive amount since the width affects the relative profile as the "45" refers to a percentage of the overall width of the tyre.