Too many drips and splashes that get absorbed by the carpet.
Install toilet over carpet.
If you cut the carpet right it will fit exactly around the bottom of the toilet base.
Dry fit the toilet first take sharp utility knife and cut along the base of the bowl cutting all the way through the carpet.
Next section off the room into four quadrants and lay the tiles down starting in the center and working your way out.
Then the toilet is reset so the base covers the cuts around the drain.
Personally i think carpeting in a bathroom especially around a toilet is generally a bad idea.
For the rest of the bathroom carpeting usually takes a while to dry and that can lead to mold.
This method will give you a cleaner result and the toilet itself will hide any ragged edges that you may have cut from the tiles.
To answer your specific question i wouldn t recommend it.
Before you can install carpet tiles you must prepare the existing floor.
The toilet has to be removed and the flooring cut to go around the floor drain.
In this video i show how to cut vinyl plank flooring around a toilet vinyl plank flooring is the going thing at the moment so jump on the trend and use these.
In some cases you can also install carpet tiles over existing wood tile or vinyl flooring so long as the existing flooring is no more than an inch thick.
Although cutting holes in your new carpet may seem like a daunting prospect with a proper template and a sharp knife you will be proud of the finished effect.
Don t force the toilet down by tightening the nuts on the toilet bolts that might crack the porcelain base.
Remove any tack strip that is in your way.
Take the time to remove the toilet so that the tiles extend past the outline of where the toilet was and then reinstall the toilet over the tops of the tiles.
Install was ring and toilet.
When you set the toilet in place you have to squish the wax ring until the toilet settles to the floor.
Toilet has to sit on solid floor.
However when laying a carpet in the bathroom the toilet must not sit on the carpet the carpet must be cut to fit neatly around the base of the toilet.
Instead sit on the toilet backward with your weight centered over the wax ring.