Can I get rid of my run-flat / run flat type tires and use a Modern Spare?

Yes. Many car owners have found run-flat type tires to be a poor alternative to a spare tire. If your vehicle came with run-flats, you can install regular non run-flat tires without issue.

Not long ago, some car manufacturers fully committed to using run-flat tires as an alternative to spare tires. Companies like BMW and others used run-flat tires across their entire model lineup. Most carmakers are now moving away from run-flat tires, as their supposed benefits don't outweigh the negatives.
A run-flat tire allows you to travel up to 50 miles without air pressure to reach a repair facility. This certainly seems appealing. However, many car owners have discovered in tire-failure situations that run-flats are not a great option.
Once a run-flat tire is driven any significant distance without air pressure, it cannot be repaired and must be replaced. Therefore, a minor puncture from a small nail requires a new tire. Additionally, in the case of a complete tire failure or blowout, the tire is undriveable.
A common complaint among car owners regarding run-flats is their poor tread life. Typically, run-flat tires are not only more expensive, but their expected tread wear is usually half that of a regular tire.
In addition to the higher replacement cost and poor tread wear, a major complaint from car owners is the harsh ride quality and lackluster performance. Considering that run-flats are installed on some of the most sophisticated and advanced vehicles, a tire should not detract from the performance for which the car was designed.
Thousands of Modern Spare customers have rediscovered the advantages of returning to regular non-run-flat tires and enjoying the peace of mind a Modern Spare offers.