We have discoverd through many years of testing, racing and winning that trued tires make a big difference in tire performance. Sure you have. This causes less contact to the track surface and less traction. The ripples will go away as you run the tires, but usually your tires will be worn out by the time they start working. Our tires are wide, round and true while providing maximum bite.
Different chassis require different size hubs as well.
We have tested and developed our tire line over three years before releasing them. HTK tires have won at the past three USRA Division II National Championships and during that span, have won in all classes. No matter what they want to call it, all tire makers buy their rubber from the same company. No one has an advantage when it comes to rubber. It all weighs the same, smells the same and works the same.