Once the Slime is in place, use the tool to re-insert the core. Step Three: Re-Inserting the Valve and Re-inflating the Tire For larger tires a chart is given on the back of the slime container. to a 12″ tire (1/4 cup) and about 2.5 oz. Once the valve is out, it’s time to add the Slime. While it sounds daunting, it is actually quite easy to remove using the included tool.

The inner valve of the tire stem valve must first be removed before you can add any slime. In order to add the Slime you will need to remove all the air out of the tire, so be sure to have a bike pump nearby before you start. If you have several bikes to seal, consider heading over to the automotive department where the Slime tends to be cheaper by the ounce. bottle sold in the bicycle section is sufficient for two bikes. Honestly, with all the bike riding that gets done around here, I can’t imagine life without tire sealant! The most widely available brand is Slime and is sold at Walmart, Target, most automotive parts store and Amazon. In the four years we have been using Slime in our kid’s bike tires, we have only experienced one flat after our son rode through a field of thorny weeds. In most cases, Slime only needs to be added to a tire once and prevents flats for essentially the life of the tire or tube. Tire sealants is essentially a fiber-filled “slime” that coats the inside of a bike tube to quickly and efficiently repair and prevents flats.

Fortunately, preventing flats is as simple as spending $8 at Walmart (or $10 on Amazon) and 15 minutes in the garage. Not only are they frustrating for kids and parents, they often sideline a bike for weeks.

Fix a flat slime