i'd hate to break the news to you but fitting the size you have is 3.11% too large which is WAY too big and is causing more of a load on your car than 195/50R15's.
the correct size for your car would have been 185/60R14, not 65 (profile), as i have mentioned MANY times before on this thread. Oversized wheels will cause a speedometer error, cause too much load on the wheel bearings, raise the ride height out of the designed parameters, increase the unsprung weight, lower fuel economy and increase rolling resistance (and other things).
the correct sizes for the vitz are the following (for the last time):
165/75R13=578mm (perfect match)
175/70R13=575mm (near-perfect match)
185/70R13=589mm (a little wide but can be fit)
185/65R13=571mm (a little wide & short but a close fit)
165/70R14=578mm (perfect match)
175/65R14=583mm (a little tall but acceptable)
185/60R14=578mm (perfect match)
195/55R14=570mm (a little smaller than ideal but can be fit)
205/55R14=581mm (a little wide but can be fit)
175/55R15=574mm (near-perfect match)
185/55R15=585mm (a little tall but acceptable)
195/50R15=576mm (near-perfect match)
any other sizes are NOT acceptable