Australian summer heat isn't just uncomfortable — for a towing rig, it raises real mechanical risk (tyre failure being the big one) and for the van itself, it can turn dangerous fast if you lose power to the fridge or aircon in a remote spot. A bit of planning before a heatwave hits makes the difference.
Tyres in extreme heat
Heat is the single biggest factor in tyre blowouts while towing, and it compounds with age, load and pressure. Check pressures when tyres are cold (before driving, not after sitting in the sun), and don't over-inflate trying to compensate for heat — follow your placard figures. On very hot days on long stretches, a scheduled stop to let tyres cool and get a visual check (bulges, uneven wear, embedded objects) is worth the ten minutes. If a tyre's getting on in age, our Tyre Age Calculator is worth a look before a big summer trip, not just when something looks wrong.
The tow vehicle and van cooling load
Aircon works harder towing a caravan in heat, which means more load on the engine and more fuel used — budget for it, and don't push a vehicle that's showing signs of overheating (temperature gauge climbing, reduced power) rather than pulling over to let it cool. Inside the van, the fridge works far harder in extreme heat, and can struggle to keep up if it's also in direct sun — shade the van's sunniest side with the awning where you can.
If you lose power in extreme heat
This is the genuinely dangerous scenario: no aircon, fridge running down, and a van that heats up fast with the door shut. Don't shelter inside a closed-up, unpowered caravan in extreme heat — it can become dangerously hot within a short time, faster than people expect. Get shade, ventilation, and water sorted immediately, and treat it as the emergency it is rather than waiting it out.
Driving in a heatwave
- Travel earlier in the day where your schedule allows, avoiding the worst heat of early-mid afternoon
- Carry more drinking water than you think you need — heat increases consumption fast, for people and pets
- Watch for heat-related road surface issues — bitumen can soften and "bleed" in extreme heat, changing grip
- Know the signs of heat exhaustion in yourself and passengers (headache, nausea, confusion, stopping sweating) and stop before it becomes heatstroke
Heatwave checklist
- Tyre pressures checked cold, condition checked at a scheduled stop on long hot drives
- Extra drinking water carried for everyone including pets
- Awning or shade sorted for the van's sunniest side at camp
- A clear plan for what "too hot to shelter inside" looks like, and what you'll do instead
- BOM heatwave warnings checked for your route before departure
FAQ
Should I lower tyre pressure in extreme heat to compensate?
No — stick to your placard's cold pressure figures. Pressure naturally rises as tyres heat up during driving; that's normal and expected, not something to pre-compensate for.
Is it safe to leave pets in the caravan on a hot day?
Only with reliable power and working aircon or ventilation you've personally verified — the same risk that applies to leaving an animal in a hot car applies to an unpowered, closed-up caravan.
Sources
Reviewed 22 September 2026. Heat risk varies with region, humidity and individual health — check current warnings for your route and take extra care with young children, older travellers and pets.