Thoughts on vibration

I'm gunna go a bit different direction with thought of a tire going bad. My reason for this is 430 gears we're enough to power threw the vibration you didn't notice where the 410 take a bit longer to get through and easier to notice. As far as trap vibration the tire could be flexing enough it goes out of round for a split second when the forward rotation is suddenly reduced. I'm assuming slicks of course. Just a thought from an ex tire jockey.