What it means
A motorhome's laden weight varies hugely depending on water, gas and gear on board - and tyre pressures need to reflect that actual weight, not just a generic setting.
What to do
- Check all tyre pressures against the handbook's laden figures, not just the unladen ones.
- Inspect for obvious damage, uneven wear or a slow puncture.
- If a specific tyre keeps losing pressure, get it checked for a puncture before it fails at speed.
Likely causes
- Genuine pressure loss from a slow puncture
- Pressures simply not adjusted for how heavily loaded the van currently is
- A faulty TPMS sensor
Rough UK cost
A puncture repair is typically £20 - £50; a full tyre replacement varies by size, often £120 - £300 each.