Is highway wander caused by caster?

[frog13]

Smaller tires-less wide tires whatever you want to call them can wander more frequently due to the type of road surface---it happens with motorcycles alot.Also, the speed your traveling makes a difference/contact patch.In SW Ohio a couple of years back,the office jockeys upstate decided to use a different material/paving method...OMG,what a disaster.This "method"---thats all I know to refer to it as---seems to have tiny grooves(micro) incorporated in it----talk about sway or wander.On four wheels it's bad enough,but, on two wheels it's !!!!!!.