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I doubt you'll find much 'extra' you can do on the diesel platforms, as they are not the same as the gas engine chassis the others have alluded to...
everyone has a different take and feel on what is 'o.k.' handling that they think should be happening when driving... I've always said that I don't weigh what the loaded semi's do, so there's no 'way' I'm going to not 'feel' something when/if they pass me by, especially at higher speeds.... it is what it is, but the wind itself also has a lot to do with it.
When the wind is already creating a need for you to slight keep the wheel 'into the wind', and a semi passes you, you can instantly feel either a 'pull' or a 'push' depending on the where the wind is coming from, and from which side the semi is passing. Much of what some drivers 'feel' is the effect of the differences between wind being suddenly blocked, as it is the semi itself.
For me, the most important aspect of a diesel coach being a 'smooth' ride is to be aware of the weight of each axle, and the PSI of each set of tires... most of the time a lower PSI is warranted, along with a smoother ride, to compensate for the weight. I've driven brand new coaches from the factories to dealers all over, and the PSI at the start might be 110 from the factory, when in reality it needs to be more like 85-90 after the coach is built, but the factories rarely concern themselves with anything other than what the tires came with from Freightliner, or the other chassis builders.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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