Polo 6n tyre fitment problem

Hi guys:) 

I have a problem with fitting Nankgang NS2-r tyres to my mk4 polo. Now i have 195/45/15. Nankang doesnt make those semi slicks in needed dimensions so i bought 195/50/15. In my case tyre is touching the coilover. I know that i need 1cm spacer but im worried that it would rub the fender. Its lowered with tatechnix adjustable coilovers,but they have rusted treads. Do you have any sollutions?

Thanks guys,im new at this community!:) 

I wanted to post the picture,but it doesnt let me...i dont know why:/