Well I am not an expert, but I think, the main issue is the width of your current tyres, which is 175 mm.
The stock tyre size is 185/60/R15, and it requires 185 mm width (as min.)
14" VS 15", then aspect ratios as 60,75,70 does not make much difference, however the width of the tyre, i.e. tread, makes a lots of difference.