Tile size. Anyone figured how big they are?

As per title, does anyone know how wide each tile is? Through pure guesswork and checking the range of the different towers, me thinks that each tile is “4.5” wide. Thoughts?

Not sure, Know my pyros just started attacking Skull and bomb across path. They have 5.72 range and I think 6.00 will hit firebolt tower.

PS  Congratulations in war, We are on the same map.