Timmy ST150

hey guys, i want to buy new rims for my ST150. The Standard wheels have the Diminsions 7x17 with an offset of 52mm. i want to buy rims in 7x17 with an offset from 45 to 38mm. in the papers of every rim set i look at its necessary to widen the fenders etc. is it really necessary or just an “it could be” thing? Car is an Fiesta JD3 MK6 ST150 with 35/30 springs. The tires will stay the same size 205/40R17

Hey Communtiy, does anyone know similar Rims to the Fifteen52 Tarmac or Turbomac? we cant get fifteen52 Rims legal here in germany so does anybody know some which looks like them? should be suitable for a Ford Fiesta ST150