By tight wheels I mean caster wheels that have a fender like on a bike that’s very close to the wheels. If you check your caster wheels, you’ll be surprised to find out that there are quite a number of different models of caster wheels.
In both figures 1 and 2 you can see that there is a normal amount of space between the fender and the wheels. In figure 3 the wheel is very tight to the fender. The reason that this is a concern is when you have these types of wheels damaging your floors. The Caster Cover is great for installing on the casters of both figure 1 and 2 but they simply cannot be installed on the casters in figure 3. If you find those types of casters damaging your floors your only option would be to replace them with either the expensive nylon casters or casters similar to the models in figures 1 and 2 and install Caster Covers.