id have to disagree with that.
yes our cars weight a lot, but with many people upgrading suspension, the car is relying more and on the tyres, especially when braking. under acceleration yeah its hard to spin or get sideways all that much, but when youre braking, your car only stops as well as the tyres you put on it. especially in the wet!!!
i dont even have kids or take many people in my car, but tyres and brakes are an area i NEVER skimp on money. people are happy to spend thousands on motors to get more power. but they forget how they are gonna stop ............