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This is good thread. It is interesting how many need balance with tubes or not. I have felt a vibration in the burnout. That is bothersome but did not have a problem down the strip. Ive run tubless no screws and tubed and screwed.



In the water box the tires have the ability to be at the same speed for some time, thus it would be like going at 50 70 mph on a highway,thus they can bounce.Note that is the most area where tires will bounce off balance if the speed is very gradual or steady.
On track you have a constant load, and you are traveling up the speed equasion ,so they do not have the ability to reach a speed and stay there,
But in a water box you tend to go at a certain level and stay and note there is not much load on the tire