Anybody dilute FINISHED Beer to lower ABV?

[Ninoid]

The question arises of increasing the alkalinity of beer by adding tap water. Would it change the taste of the beer and reduce its shelf life?

 

[cfrazier77]

Big Breweries add water, but they de oxygenate the water first. They often run co2 through a colum of water to do it

 

[Ninoid]

Perhaps adding a small amount of potassium metabisulfite to the water would stop the beer from oxidizing during dilution?
This could be a problem with natural carbonation because it would likely kill any remaining yeast in the beer.