Adam Drake explains why you might want to glue your 1/8 foam tire inserts to the rim, and how to do so properly.
Tony from Klinik explains how to replace tire foams, with perhaps the most surprising bit (for me, at least) being that you can just cut the rubber of the tire and glue it back together, and it'll be strong enough for racing. *Mind blown.*
Eric Anderson demonstrates his techniques for gluing sedan tires, including how to apply glue to the sidewalls to tune the tire side-flex characteristics.