Here's the riddle

When I make a left/right hand turn, the turn is not very sharp.

If I am traveling at some speed, even slow, and I make a sharp turn, the tires might squeel

What Am I? (pls. the correct answer is NOT crazy)

__________________
Mark Herzig
1995 E300D 153K
1985 300D 142K (sold)
1979 450SL 122 miles (sold)
1992 500E 127K (sold)
1987 300SDL 132K (sold)
1986 300E 161K (sold)