Tyres & wheelsHonda Shuttle GP8

Honda Shuttle GP8: Check 15- vs 16-Inch Tyre Pressure

Identify whether a Shuttle GP8 4WD Hybrid has the documented 15- or 16-inch tyre package, then inspect and adjust cold tyre pressures against the correct Honda source and vehicle placard.

Time
10–15 minutes
Difficulty
Easy
Tools
3 needed
Instructions
6 steps

Applies to Honda Shuttle GP8 · 2015–2022 · Japan-market Shuttle Hybrid 4WD. Honda Shuttle Hybrid GP8 4WD in the cited Japan-market owner manual; tyres, trim, production period and driver's-side placard must match. Always compare the described parts, labels and specifications with your own vehicle and manual.

What you’ll need

  • Tyre-pressure gauge
  • Air source if adjustment is necessary
  • Tyre-size markings and the driver's-side pressure placard

Step-by-step instructions

Follow these steps

Follow the written instructions in order; illustrations are optional, not a requirement for a complete guide. If a component or label looks different on your car, stop and check your own manual.

  1. Step 1 of 6

    Identify the exact GP8 and its fitted wheel size

    Check the chassis code and tyre sidewall first. The cited GP8 Hybrid 4WD reference separates 15-inch and 16-inch factory tyre packages. If tyres or wheels have been changed, use the individual vehicle pressure label rather than selecting a value from appearance alone.

  2. Step 2 of 6

    Select the correct Honda front and rear reference

    For the cited GP8 4WD 15-inch configuration, Honda specifies 220 kPa front and rear. For the GP8 4WD 16-inch configuration, Honda lists 240 kPa front and 230 kPa rear. Confirm that the tyre and placard match before applying these numbers.

  3. Step 3 of 6

    Inspect tread and sidewalls before inflation

    Look for flattening, cuts, cracks, exposed damage, bulges, embedded objects and uneven or excessive wear on each tyre. Honda's archived Shuttle manual treats these as checks separate from air pressure.

  4. Step 4 of 6

    Measure all four tyres while cold

    Use the gauge with cool tyres, measure each tyre at its valve and record the result by front and rear axle. Warm tyres can show artificially higher readings, so do not use a hot reading to lower the pressure to a cold specification.

  5. Step 5 of 6

    Adjust to the matching label and remeasure

    If pressure needs correcting, use an appropriate air source and gauge, add or release small amounts and measure again. Keep front and rear values separate for the 16-inch package.

  6. Step 6 of 6

    Stop if tyres are unsafe or keep losing pressure

    Refit valve caps after inspection. Have a tyre professional investigate repeated loss, damage or wear near the indicators; do not treat topping up the tyre as a puncture repair.

References & limitations

Where these instructions come from

Honda Shuttle Hybrid GP8 4WD in the cited Japan-market owner manual; tyres, trim, production period and driver's-side placard must match

The tyre-pressure values are read from Honda's cited GP8 configurations. The puncture-kit section is only used as a source of published pressure values; puncture repairs and compressor-specific emergency procedures are excluded.

Honda Shuttle Hybrid owner manual (archived) ↗

Manual section: Printed p. 242, Tyre inspection and daily checks; pp. 266–269, specified GP8 4WD 15- and 16-inch pressure references

Instructions checked against manufacturer documentation; not a physical inspection of every vehicle.