Don't drive like an idiot and you'll be okay..haha soo unsafe! track car? You mean, only a drift car lol.. making turns, outside tires spin at different speed than inside tires. Causing you to lose traction on the outside tire, lose control, hit dirt, flip over, burn and DIE!
OH and it chews up your tires.
You make it seem like a welded diff guarantees that you'll spin out. They're not practical because they wear out your tires way too fast, but that's just my opinion..So everytime it rains your going to drive 10mph? Welded diffs arnt practical unless your car is a straight drift car...