Yes it's a Sea Ray 225 now with a new 5.7 liter motor. I had to move the boat/trailer and needed at least one new tire as it came apart. With the size I needed 215/75-14 there were limited choices so I went with trailer specific 6-ply rating tires and thought I would change them myself but ran into a time crunch as it was supposed to rain again the next day. I have been wanting to get a basic bubble balancer as I've used them in the past with pretty acceptable results so I think I'll do that with $60 I save just getting them changed and not balanced. As you stated I know that I will be towing at the 55-60 speeds as you said for safety reasons and my '85 E350 van has a 4.10 rear (Dana) and a 6.9 liter diesel and is humming up in rpm there anyway

Now do you guys think a bubble balancer will be good enough for "ballpark" balancing 60 mph towing speed trailer tires?