Tire Size & Speedo Calibration

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Expert Tyre Size Calibration & Speedometer Correction

Fitting larger all‑terrain or mud‑terrain tyres increases the wheel circumference, but the vehicle computer (PCM/TCM) still uses factory tyre data. That mismatch causes incorrect speedometer readings, wrong odometer distance, inaccurate DTE and altered transmission shift behaviour.

Our tyre size calibration service uses FORScan/BCM adaptations to update tyre circumference and speed-sensor parameters, verify TPMS and perform road testing. The result: accurate speedo, correct odometer distance, reliable DTE and restored transmission shift logic. We specialise in Ford models including Ford Ranger, Ford Raptor, Ford Everest and Ford F‑150.

  • Speedometer & speedo calibration
  • Tyre circumference & tyre size calibration
  • FORScan / PCM / TCM adaptations
  • TPMS verification & sensor checks
  • Mobile calibration across Sydney with road verification

Mobile service across Sydney — for a fast quote, contact us or call 0431 844 346.

Why Stock Settings Don't Work with Aftermarket Tyres

When you upgrade to larger all‑terrain or mud‑terrain tyres, the physical circumference changes but factory settings remain. We update the vehicle computer so all dashboard readings and vehicle behaviours reflect the new tyres.

Speedo calibration and tyre size calibration for Ford Ranger, Raptor, Everest and F150

Common Questions — Speedo & Tyre Calibration

Most calibrations take 20–30 minutes depending on vehicle model and checks required. We include a short road test to confirm results.

Yes — we provide fully mobile tyre calibration across Greater Sydney. Book online or call/text to arrange a time and location.