These are not alternatives. A gauge tells you the pressure and an inflator corrects it, and having only one of them leaves you knowing about a problem you cannot fix or fixing one you cannot measure.
The verdict up front
Both belong on the truck. If you are buying one first, buy the gauge, because knowing is what prevents the failure. An inflator without a gauge is guesswork, and over-inflation causes its own problems.
Why this is worth more than it looks
Under-inflated tires wear faster, burn more fuel and run hotter, and heat is what destroys them. A tire running significantly under pressure is doing damage on every mile, and the failure when it comes tends to happen at highway speed.
The habit that matters
Check cold, before the truck has run, since driving heats the tires and raises the reading. Checking warm and adjusting to the cold specification leaves you under-inflated once everything cools down.
Tire spend is one of the largest line items in a truck’s operating cost, and it responds directly to this one habit. Our cost per mile calculator shows where it lands against everything else you pay for.
Our GOOLOO A3 review covers the combination jump pack and inflator, and why a gauge remains the cheapest tool on this list.
