mark
+1y
the sidewall of a 175/70 tire is 4.8 inches while the sidewall of the stock 205/75 tire is 6.1 inches.
you are getting a 1.5inch drop when you install those tires. and you are also adding a 1.5inch fender gap.
that tire is .1inch taller than a 205/40-17 tire. just for some references
that is a VERY small 14inch tire
and that tire is SCARY skinny, may be too skinny for the stock mazda steelies.
i'd recommend atleast a 195 tire. 195/60 is about .2inches smaller than that 175/70, but atleast it will fit the wheel width wise