Aren't stock rims 5.5" wide ? I ran CF1's on 6" rims, I liked them, now on these which I think are probably better https://www.oponeo.co.uk/tyre-details/goodyear-efficientgrip-performance-185-55-r14-80-h#274240802
I'd go 175/60 on standard steel rims, or 155 for snow tyres.