How come everyone seems to say that the car is too wide

My Monkey is 250mm at front. It says in manual and i also measured it and the BRCA rules say 250 is the max width so mine is fine. I had a look in the BRCA book i got so if we do a regional them i`m ok.
If you do think its too wide then i have a cheap(like free) option to fix. Just drill another hole 5mm further in on the wishbone where the hub carrier sits as theres loads of space. Job done