Fleet Tire Tread Depth Tracker
Log tread depth readings, see the wear trend and get a projected date when the 3 mm limit will be reached.
Readings stay in your browser (localStorage) โ nothing is uploaded.
Straight-line (least-squares) extrapolation of your logged readings to the 3 mm alarm threshold (warning at 4.5 mm). A low Rยฒ means the trend is noisy โ log more readings before trusting the projection.
Field notes from maintenance practice
Measure in three grooves across the tread and log the lowest: shoulder-vs-centre differences diagnose pressure (centre wear = over-inflation, both shoulders = under-inflation) and alignment (one shoulder = toe/camber). Casings pulled at 3โ4 mm retread reliably; run to the cords and you lose the casing value too โ often a third of the tire's lifetime economics. The default action limit of 3 mm comes from fleet practice of pulling steer tires at ~3โ4 mm (legal minimum is 1.6 mm in most jurisdictions, 3.2 mm for steer axles in some commercial rules); adjust it if your OEM or procedure specifies otherwise.
Linear extrapolation is honest only when the Rยฒ is decent (โฅ 0.7) and degradation is steady. Tread wears close to linearly with distance for a fixed route and pressure, but under-inflation bends the curve down fast โ pair every depth reading with a pressure check or the projection will flatter the tire. If the last reading jumps far off the line, re-measure before believing it โ measurement technique drifts too.
Sources & references
- Commercial vehicle regulations โ minimum tread depth (e.g. EU 1.6 mm; check local steer-axle rules)
- TMC RP 235 โ tire maintenance and retreading recommended practice
Trend screening only โ confirm with a proper inspection before running equipment to a projected limit.
Fleet Tire Tread Depth Tracker for maintenance and reliability teams: Log tread depth readings, see the wear trend and get a projected date when the 3 mm limit will be reached. Free, private (everything runs in your browser) and ready for daily plant use.
About Fleet Tire Tread Depth Tracker
This tracker is a remaining-useful-life (RUL) estimator for tread depth. Log a dated reading whenever you measure; the tool fits a least-squares straight line through your history and projects when it will cross the 3 mm action limit (warning at 4.5 mm) โ turning scattered measurements into a forecast date you can plan parts and downtime around.
How to use Fleet Tire Tread Depth Tracker
- 1Enter each dated measurement as you take it โ readings persist in your browser between visits.
- 2Adjust the alarm (and warning) threshold to your OEM or procedure limit if it differs from the default.
- 3Read the fitted trend, Rยฒ, days-to-alarm and the projected date โ then plan parts and downtime around that date.
Why use Fleet Tire Tread Depth Tracker?
- โLog tread depth readings, see the wear trend and get a projected date when the 3 mm limit will be reached โ computed instantly with the standard formula
- โ100% free and unlimited, with no sign-up, login or paywall
- โRuns entirely in your browser โ readings and asset data never leave your device
- โNiche-specific defaults and thresholds for tread depth, traceable to the cited standards
Frequently asked questions
What limit should trigger action for tread depth?+
The widely used limit is 3 mm (fleet practice of pulling steer tires at ~3โ4 mm (legal minimum is 1.6 mm in most jurisdictions, 3.2 mm for steer axles in some commercial rules)). Set a warning at 4.5 mm so parts and labour are ready before the alarm. Your OEM manual or internal procedure overrides the generic figure.
At what tread depth should commercial tires be pulled for retreading?+
Most casing programs want tires pulled by 3โ4 mm: deep enough that the casing never ran overloaded on thin rubber or picked up penetrations through a worn crown. The legal 1.6 mm is a road-safety floor, not an economic target โ wet braking distance grows measurably below ~3 mm, and a rejected casing costs you the retread saving entirely.
How many readings before the projection is trustworthy?+
At least 4โ6 spread over a meaningful fraction of the asset's life, with a fit Rยฒ of about 0.7 or better. Two points always make a perfect line โ that is curve fitting, not condition monitoring. Keep measurement conditions (load, temperature, location) consistent.
Is straight-line extrapolation valid for wear?+
It is the standard first approximation for steady-state degradation, and it is deliberately conservative to act on. Many failure modes accelerate near the end (bathtub curve), so treat the projected date as the latest acceptable intervention date, not a promise.
Where is my logged data stored?+
Entirely in your browser's localStorage on this device โ nothing is uploaded to any server. Export or note critical values elsewhere if you need a permanent maintenance record shared across a team.
Embed Fleet Tire Tread Depth Tracker on your website
Want Fleet Tire Tread Depth Trackeron your own site? Paste this snippet into any HTML page โ it's free, with no API key or sign-up. The tool loads in an iframe and keeps working exactly as it does here.
<iframe src="https://tooljolt.com/tools/tire-tread-depth-tracker" width="100%" height="640" style="border:1px solid #e5e7eb;border-radius:12px;max-width:680px" title="Fleet Tire Tread Depth Tracker โ ToolJolt" loading="lazy"></iframe>Related tools
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