Forklift TPMS: Pressure Split Feels Like Sway A forklift works on hard floors with load on the forks, so a pressure split shows as sway at lift height - not a soft tyre. What a phone sensor can and cannot do.

Soft is the wrong word

A forklift does not have the suspension travel to feel "a bit soft". It works on a concrete floor with the load out on the forks, and the tyres are the only compliance in the system. When one tyre is under-inflated, the load shifts onto the frame and onto the other wheel on that axle. What the driver notices is not softness: it is sway at lift height, and a machine that does not track straight when it reverses.

That difference matters because it changes who finds the problem. With a car, the driver feels it. With a forklift, the first sign is often a mast or a chain that has been working unevenly for weeks.

What a pressure split does

• Uneven load. The weaker tyre carries less, the stronger one carries more, and the frame

takes the rest.

• Mast and chain wear. Sway at lift height means the guides and chains are loaded off-axis.
• Uneven wear pattern. One tyre wears on the shoulder; eventually you replace a pair

instead of a tyre.

• Battery cost on electric trucks. Low pressure raises rolling resistance, and the shift

ends with a flatter battery.

Why the check gets skipped

Because it is a task with no record. The gauge is in the maintenance room, the truck is out on the floor, and the round trip takes five minutes. Pressure changes slowly, so skipping one day costs nothing visible — which is exactly how a weekly check becomes an annual one.

What a phone-readable sensor changes

Our BLE sensor moves the check from the maintenance room to the driver's phone: 2.4 GHz, no receiver, no wiring on the truck, 0-500 kPa gauge, ±2 kPa, IP67, on a replaceable CR1632 cell that lasts about 1.5 years without re-pairing. A shift-start round on thirty trucks takes minutes, and each reading can be recorded — which is the part a gauge cannot do: proof that the round happened.

Where it stops

Without a receiver there is no continuous monitoring and no in-cab alarm. This is a per-shift check, not an active protection system, and it does not measure the load on the forks. For high-pressure tyres the standard 0-500 kPa range no longer applies and a different sensor is needed — we say that before the quote.

Used as a round sheet rather than a dashboard, it removes the most common cause of premature forklift tyre replacement: a pressure nobody measured.

<p>(<!--fbl-link-->) Related: <a href="/applications/forklift-battery">forklift tyre pressure monitoring</a> - the application page for forklifts, yard tractors and battery vehicles.</p>