Portable tire inflators, pressure gauges & overlanding guides

Brand specification comparison · not tested by us

Slime tire pressure gauges compared

Slime sells six gauges across three display types and not one of them publishes an accuracy figure — so the range and the chuck, not the tolerance, are what separate them.

The short version

Models compared6
Brands1
Publish an accuracy figure0 of 6
EvidenceManufacturer listings only — we have not measured any unit on this page

Slime is a tire-care brand, not an instrument maker, and its gauge line reads that way: a pencil gauge at the bottom, five dial or digital gauges above it, and a price spread of only about sixteen dollars across the whole range.

We have not tested any of these. The table is Slime’s own published specification, which is thinner than most: no model states a tolerance, and only one states a hose length.

Slime models side by side

A dash means the manufacturer does not publish that field. We do not estimate it, and we have not tested any of these products.

ModelTypeRangeStated accuracyResolutionHosePublished price
Slime Airlock DigitalDigital5–150 PSI———$24.39
Slime Airlock HDDigital0–99 PSI———$26.99
Slime Airlock Dial HPAnalog dial10–160 PSI———$16.99
Slime Dual Head DialAnalog dial10–160 PSI——9 in$25.59
Slime Chrome DialAnalog dial5–60 PSI———$16.99
Slime Airlock PencilPencil10–120 PSI———$10.99

The Airlock name covers two unrelated gauges

Three of the six carry the Airlock name, but they are not one product line. The Airlock Digital is a 5–150 PSI handheld with a display; the Airlock HD is a 0–99 PSI display gauge with the claimed reading-hold feature; the Airlock Pencil is a 10–120 PSI stick gauge with neither.

If you are searching for "Slime Airlock", decide which of those three jobs you have before comparing prices, because the cheapest and the most expensive share nothing but the badge.

No Slime gauge states a tolerance

Six listings, zero accuracy figures. That is the most important row in the table, and it is empty on purpose — we record it as a dash rather than guessing.

It means these gauges can be compared on convenience and range but not on precision. Whichever you pick, check it once against a gauge you trust and note the offset; on an unstated tolerance that is the only way to know what you own.

Range is the real fork in the line

The 5–60 PSI Chrome Dial and the 0–99 PSI Airlock HD are the sensible picks for a car at 33 PSI: both read well away from the bottom of their scale. The 10–160 PSI dials exist for trailer and light-truck pressures, and buying one for a passenger car puts your working pressure in the least reliable part of the dial.

The Dual Head Dial is the only Slime with a hose and an angled chuck, which makes it the one to choose when the valve sits behind a spoke rather than out in the open.

Model by model

Slime Airlock Digital · $24.39
The mid-priced digital: 5–150 PSI covers cars through light trucks, and the display removes the parallax error a dial has at an awkward angle.
Slime Airlock HD · $26.99
The most expensive and the smallest range at 0–99 PSI. You are paying for the HD display and the claimed hold, not for extra pressure coverage.
Slime Airlock Dial HP · $16.99
The cheapest way into the 160 PSI range for trailer and RV pressures, with a plain dial and no published tolerance.
Slime Dual Head Dial · $25.59
The only Slime gauge with a hose, and the only dual-head chuck — the one to pick if reaching a valve behind a spoke is the problem.
Slime Chrome Dial · $16.99
A 5–60 PSI dial aimed squarely at passenger cars; it reads near mid-scale at 33 PSI, which is where a mechanical gauge behaves best.
Slime Airlock Pencil · $10.99
The cheapest gauge here and the most limited: no hose, no hold, and a 10–120 PSI scale that is hardest to read precisely at car pressures.

Frequently asked

Is the Slime Airlock HD worth more than the Airlock Digital?

Only if you want the hold feature on the HD. The Digital covers a wider 5–150 PSI range for a few dollars less; neither publishes a tolerance, so the display is the whole difference.

Which Slime gauge reads best at car pressure?

The 5–60 PSI Chrome Dial or the 0–99 PSI Airlock HD. Both work near mid-scale at 33 PSI, where a mechanical or electronic gauge is most reliable.

Does Slime publish accuracy for any gauge?

No. None of the six listings we hold states a tolerance such as ±1 PSI or a percentage.

Where these numbers come from

Every value on this page is quoted from the manufacturer’s own listing, linked below. We have not bought, used or measured any of these products, so there is no test data of ours to show. A missing field is a fact about the listing, not an omission by us.