70/75 is the profile, or sidewall as measured as a percentage of the tire width. 195* .70 = 136.5mm 195* .75 = 146.
25mm So your sidewall will be 10mm 'fatter', meaning your car will sit 1cm higher, and your tire will be 1cm closer to your strut mount. Look inside your strut mount, if there is LOTS of space between the top of your ...