I just filled my toro ztr tires with water. Full with no air in them.
Have filled every tire on every mower I have ever had and never had a problem.
People have been doing it for years
Did I say dont do it? NO! Im only explaining that
if there is an issue, that momentum thing could be the cause,
or part of the problem. The only time anyone would need or want water in the tires is if they mow slopes. Mowing slopes is hard on hydros as it is, putting more pressure on them could be a reason for a dealer to void warranty so, I would be asking the dealer about it and if it could cause any warranty issues.
Or are you going to disagree with that?
At the end of the day, the OP has to cover himself if there is a problem. Some dealers, like insurance companies will look for any reason to get out of a warranty repair!
Sure, people have been putting water in LT's, GT's and tractors, forever. I rarely hear about it in ztrs. Not saying people dont do it, just rarely hear it.