billy1davis wrote:
How does this issue compare with a class a gasser and a class c?
It depends on the class A and the class C in question. Some class C's are better than others, and I suspect the variation among class A's may be even greater.
On many class A's, you sit higher above the ground than in a class C so the sensation of rolling or swaying is somewhat magnified, even if the actual amount of deflection is no different. How the vehicle itself responds to side winds in terms of tracking true or not may be an entirely different matter. A class A with a tag axle will generally be much better in that latter regard than other class A's or class C's; the tag axle does a good bit to add stability. That said, a well-sorted suspension on most any motorhome style will not be too bad in a stiff crosswind; but of course it will be affected somewhat more than most any passenger car or pickup truck merely by virtue of having much greater area exposed to the wind forces.
Some have reported that air tabs do a good bit to help with cross-wind vices, besides the usual suspension fixes/helps.