I keep the front tire pressure at 55 and rear at 80 and rear air bags at 60 and I never have had a problem with oversteer in the wind with my 2500 Sprinter PW Plateau TS. The 3500 with dualies should be just as good if not better. I think a lot of the problems encountered are due to tire pressures. With only 55 psi up front it will understeer and with 60 I see oversteer. Sprinters do well in cross winds due to MB nannies which you don't get on E350 E450 suspensions to the same degree as Mercedes inhibits the effects of cross winds.
