Ceteris paribus, it mostly does. But that also means, that they can be used to driver faster holding the probability of an accident constant, while raising the severity of damage in case of an accident. Incidents where they would have prevented an accident are likely to be insignificant, while at the same time, more grip is likely to induce more risk-seeking driving, hence resulting in a net-negative to overall safety.

However, keep in mind that super wide tires are never installed for safety reasons anyway, but mostly for cosmetic purposes and the drivers couldn't care less for the risks and damages that come with wider tires. Therefore society has to prohibit it in self-defence.