The large top-quark mass is responsible for the enhancement of the obl
ique radiative corrections in SUSY models. We present analytical formu
las for these corrections to the W-boson mass m(W) and to the Z l(+)l(
-)-coupling constants. A comparison with the result of the standard mo
del fit is made. (C) 1998 American Institute of Physics. [S0021-3640(9
8)00110-8].