Outside of BITOG'ers and petrol heads, the theory goes that most people are more capable of controlling understeer by letting off.
If that non-gearhead is caught unaware by the back coming round there's a good chance they'll panic, and very possibly end up having a worse crash than if the front pushed a bit wide.
(so I was told when I was in college training as a mechanic)
Ultimately I think it's a liability issue..imagine all the soccer moms and grandparents taking their tyre fitter to court claiming
"they put unsafe tyres on my car that made me spin round and crash"
If that non-gearhead is caught unaware by the back coming round there's a good chance they'll panic, and very possibly end up having a worse crash than if the front pushed a bit wide.
(so I was told when I was in college training as a mechanic)
Ultimately I think it's a liability issue..imagine all the soccer moms and grandparents taking their tyre fitter to court claiming
"they put unsafe tyres on my car that made me spin round and crash"