Review on Effortlessly Inflate Your Tires with the Slime 40020 Tire Top Off Inflator by Ham Channell

I have three of these shoes. One melted on first use as seen in the attached photos. This doesn't necessarily mean you shouldn't buy it. It just means you have to be extremely careful when testing before storage and that this is nothing more than an emergency pump. That said, if your TPMS sensor fails in the middle of a ride, or yours fails, this pump should be of no use. This is not a reliable pump at all. Check before you store it. I hooked mine up to an air tank and pumped for 15 minutes. This should be enough to understand if it works. I've found it to draw 1 to 3 amps of current (at 12.9v) and can pump up to 50psi perfectly. Contrary to some reviews, it doesn't have a major problem with pump speed. In a roadside emergency, 10 minutes is enough to inflate a flat tire. Now, if you use it for monthly maintenance on all four wheels, forget it. If you have the opportunity, open it before use and apply some grease to the plastic gears and oil behind the piston. This will definitely extend the lifespan and won't last long. What the manufacturer needs to improve is the ventilation. There is a fan on the pump motor, but practically no intake and exhaust ports. Heck, I couldn't even tell where the air intake for the pump was. And the pump gets very hot during use so more holes in the case would definitely do it good. In addition, the motor fan simply sits frictionally on the spindle. When my pump failed, it fell off, melting the entire block. And the duct is so airtight that if the fan moves even a little, it hits the case (which in turn stops it and melts everything). All in all, given the size and price, the pump is fine if you need a multi-vehicle emergency pump that you never intend to use unless it's an emergency. For everything else it is completely unsuitable. I would definitely like to see a similarly compact (or smaller) and slightly more reliable device that costs maybe 50% more. Something I can also buy "just in case" but which I can trust more reliably in an emergency.