Keeper
I'm Awesome
Yep, mine has that vibration at 45mph regardless of tire size. And it is worse on certain types of roads than others. Weight in the bed is the only way to get it to calm down. I always figured it was the oddball wheelbase combined with the 3500 springs. I went down the rabbit hole of balancing/rebalancing every moving part before finally accepting the reality of it. Good to know that when I tackle the build on it next year that there are some options out there to resolve the issue. Nice.