A stream of pink goop lets you know the tire puncture is being sealed. Tyre Guardian thickens as it comes in contact with air and creates a durable plug. Immediate tire replacement is recommended. A stream of pink goop lets you know the tire puncture is being sealed. Tyre Guardian thick Flats are no fun, and unlike cagers, motorcyclists can’t carry a spare in the trunk. Plug kits are great, but wouldn’t it be nice to seal punctures as they happen, before the tire goes flat? With a couple ounces of Tyre Guardian goop injected into your bike’s tires, that’s exactly what you’ll do. When one of our long-term testbikes was in the shop for a tire change, I took the opportunity to put Tyre Guardian to the test. The pink latex-based mixture can be poured in at the time of tire installation or injected through the valve stem after the fact. Squirting half a bottle of the stuff into the used rear tire through the valve stem took all of 2 minutes, and was accomplished without mess. After inflating the tire and riding the bike to distribute the fluid, I put the bike on a rear stand and armed a cordless drill with a quarter-inch bitthe maximum claimed pluggable puncture diameter. With the tire spinning in first gear the opening was immediately reduced from a whistling puncture to a sputtering hole, and within 30 seconds the leak was stopped. Tire pressure had only dropped 2 psi. The test was repeated, except this time I simply rotated the puncture to the 6-o’clock position. The hole was sealed almost instantly with no registered pressure loss. Changing the tire afterward proved messier than usual, but it wasn’t anything a few paper towels couldn’t clean up. One 8-ounce bottle treats both of your bike’s tires, unless you’re running a crazy Bike Night-size rear. Tyre Guardian Price: $29.95 Contact: Tyre Guardian www.tyreguardian.com Verdict 4.5 stars out of 5 Like having a spare tire—and a whole lot easier to carry! By Ari Henning Enjoyed this Post? Subscribe to our RSS Feed, or use your favorite social media to recommend us to friends and colleagues!