Don't throw away your rolling suitcase and buy another one. Most of the components can be purchased online. Search for your suitcase model and type into the search "replacement wheels" and you'll probably find what you're looking for. Here's a link to the wheels that fit my Timberland suitcase. (paid link) Pair, Luggage Wheels Suitcase Replacement Wheels for Luggage Suitcase Trolley (W041-2 S)
How To Fix And Replace Your Suitcase Wheel For Less Than $15 For Country: United States. City: Berkeley, Elk Grove, Long Beach, Lubbock, Providence
