Like wear and tear on carpet?

Wood paneling, green shag carpet, floral wallpaper, and yellowed curtains dominated the natural beauty of our 1912 beast.

For example, even if the carpets or flooring were brand new when they moved in, and they're now completely trashed, you've had more than a full lifetime out of them. 

New flooring and carpets.  

New roof,new windows, new carpet.

@Eddie SorrellIf those market rent #'s are correct, I would clearly explain this to them, and then recommend that you offer to do some minor upgrades to the units for those existing tenants.Put up a fresh coat of paint on the walls, pay for carpet cleaning (if there are carpets), do minimal upgrades to the lighting fixtures, and maybe even throwing in some USB outlets -all relatively inexpensive upgrades to your units that will help force appreciate the rent, even if they decide not to stay. 

I just replaced my carpet with a vynil plank flooring called NUCORE.

Smaller house, 1 car garage, semi updated, needs new windows, ac unit, carpet upstairs id put wood that matches the downstairs. 

You don't want to put carpet down before painting, ect. 

If you are a landlord, avoid carpeting except bedrooms.