How To Do The Big Lap In A Big Rig

There’s a persistent myth in the Big Lap community that you need a small, light, off-road setup to do the trip properly. That’s nonsense. Thousands of people do the Big Lap every year in big rigs and have an incredible time. A 24-foot dual-axle van with a full ensuite, a queen bed, and a proper kitchen is comfortable, and comfort matters when you’re living in something for 6 to 12 months.

But a big rig does change how you plan. Some roads are off-limits. Some camps won’t fit you. Fuel costs more. Towing is more demanding. None of these are dealbreakers, they’re just things you plan around. This guide covers exactly what changes when you’re doing the Big Lap in a larger setup, and how to make it work without feeling like you’re missing out.

Big rig, big comfort. The trade-off is access, not experience. You’ll see 90% of what smaller setups see, and you’ll be more comfortable doing it.

What Counts As A Big Rig?

There’s no official definition, but in the Big Lap community, a “big rig” generally means a caravan over 22 feet (about 6.7 metres) in body length, typically dual-axle, with a loaded weight (ATM) over 2,500kg. When you add the tow vehicle, the overall combination length is often 15 to 19 metres and the gross combination mass (GCM) is pushing or exceeding 7,000kg.

Common big rig configurations include 22 to 26-foot conventional caravans (the most popular), full-size off-road caravans (heavy despite being marketed as “off-road”), and fifth wheelers. If you’re towing with a 200 Series LandCruiser, a full-size Patrol, or a large dual-cab ute, and your van is dual-axle, you’re in big rig territory.

What makes this relevant for planning isn’t the label. It’s the practical implications: length restrictions at camps, width on narrow roads, turning circles in tight spots, fuel consumption while towing, and the sheer weight affecting towing dynamics and braking distances.

What A Big Rig Can (And Can’t) Do

What You Can Do

The full Highway 1 loop. Every metre of the sealed coastal highway is accessible to big rigs. The core Big Lap route, all 15,000km of it, is no problem. Sealed highways, major regional roads, and the links between capital cities are built for heavy vehicle traffic far bigger than your caravan.

Most caravan parks. The vast majority of caravan parks accommodate big rigs. Many have drive-through sites specifically designed for long combinations. Book these in advance during peak season because they’re popular and limited in number at each park.

Many free camps and rest areas. Plenty of free camps along the main highway corridors are spacious enough for big rigs. Look for camps described as “suitable for large rigs” or “easy access” in WikiCamps reviews. Highway rest areas are almost always fine.

Most major attractions and national parks. The sealed access roads to major destinations like Uluru, Kakadu, Cradle Mountain, the Twelve Apostles, and Ningaloo are all big rig friendly. You won’t miss the headline experiences.

What You’ll Struggle With

Tight bush camps. Small free camps down narrow tracks with limited turning space are the number one limitation. If the access road is single-lane, winding, or requires reversing through trees, a 19-metre combination won’t make it. This rules out a percentage of the best bush camps, particularly in national parks and along rivers.

Some national park campgrounds. Several national parks have length restrictions (often 6 or 7.5 metres for the van) or access roads that are unsuitable for long combinations. Always check restrictions before driving in. Getting stuck or having to reverse a big rig out of a narrow dead-end road is stressful, dangerous, and avoidable with 2 minutes of research.

Unsealed roads with corrugations. Big rigs can handle well-maintained gravel roads, but corrugated outback tracks punish heavy, long vans more than light, short ones. The longer the van, the more it flexes over corrugations, accelerating wear on the chassis, suspension, and everything inside. If you’re taking a big rig on unsealed roads, reduce speed significantly and check tyre pressures.

Mountain roads and tight switchbacks. Some scenic drives (parts of the Victorian Alps, certain Tasmanian mountain roads, Cape Tribulation’s range crossing) involve tight hairpin turns, steep grades, or narrow lanes that are uncomfortable or impossible in a long combination.

On the sealed highway, a big rig is in its element. Comfortable, stable, and covering ground with ease.

Route Planning For Big Rigs

The route planning process for a big rig is the same as for any setup, with one extra step: checking access before committing to a road or a campsite.

Stick to the network. Plan your route primarily on sealed highways and major regional roads. The Highway 1 loop and the main inland highways (Stuart, Great Northern, Barrier, Newell) are all big rig territory. Detours onto secondary sealed roads are usually fine; detours onto unsealed roads need research first.

Check road conditions on Hema. Before taking any road that isn’t a major highway, check it on Hema Explorer. Look at the road surface rating and read any notes about width, condition, and suitability for large vehicles. If there’s any doubt, ask in a Facebook group or call the local council.

Plan fuel stops carefully. Big rigs use more fuel (typically 16 to 22L/100km when towing), which means your range between fuel stops matters more. On remote stretches like the Nullarbor, the Tanami Track approaches, or western Queensland, know exactly where you’ll refuel and don’t rely on finding fuel “somewhere along the way.” Carry extra fuel capacity if your vehicle allows it.

Accept what you’ll miss. The Gibb River Road, Cape York, the Simpson Desert, and some tight national park camps are off the table unless you unhitch and explore them in your tow vehicle alone. This isn’t a failure of your setup; it’s a trade-off you made for comfort. The 90% of Australia that’s accessible to big rigs includes every major highlight and thousands of incredible lesser-known stops.

Campsite Selection

Finding the right campsites is the biggest daily adjustment for big rig travellers. Here’s how to choose well.

Caravan parks: book drive-through sites. If you’re staying at a caravan park, always request a drive-through or pull-through site. Reversing a 19-metre combination into a tight site between two other vans, with kids on bikes everywhere, is nobody’s idea of fun. Drive-through sites are limited at most parks, so book ahead during peak season and school holidays.

Free camps: check access in reviews. Before driving to a free camp, read the most recent WikiCamps reviews specifically for access information. Look for mentions of road width, turning space, and whether other large vans have successfully used the camp. If recent reviews only mention “we came in with our Jayco Journey” (a compact van), it might not suit your rig.

National parks: call ahead. National park campgrounds often have length restrictions and limited information online. Call the park office or the state parks authority to confirm your van length is permitted and the access road is suitable. This takes 5 minutes and prevents a wasted half-day driving to a camp you can’t enter.

Arrive early. The best sites at popular camps fill first. For big rigs this is doubly important because not every site in a camp will physically fit your setup. Arriving by early afternoon gives you the best selection. Arriving at dusk means you’re setting up in whatever’s left, possibly on an angle, possibly too close to the road, and definitely more stressful than it needs to be.

Unhitch and explore. One of the best strategies for big rig travellers is to set up at a base camp (caravan park or spacious free camp) for several nights and explore the surrounding area in the tow vehicle alone. This gives you access to tight roads, small camps, and scenic drives that the full combination can’t handle. Think of the van as your home base and the tow vehicle as your day-trip car.

Driving & Towing A Big Rig

Towing a big rig demands more attention, more fuel, and more patience than a smaller setup. The rewards are worth it, but these things need to be factored into your daily driving plan.

Fuel consumption. Expect 16 to 22L/100km depending on your vehicle, van weight, terrain, and wind conditions. On a 30,000km trip, the difference between a big rig at 20L/100km and a smaller setup at 14L/100km is roughly 1,800 litres of extra fuel. At $2.00/L, that’s $3,600 over the trip. Budget for it.

Driving speed. Most big rig towers find 90 to 95km/h is the sweet spot for stability and fuel economy, even on 110km/h highways. This isn’t slow; it’s safe. Your braking distances are longer, your reaction time needs are greater, and caravan sway risk increases with speed. Let the utes pass. You’ll arrive 15 minutes later and in better shape.

Wind. Big rigs have more surface area, which means crosswinds and road trains (and the bow wave they create) affect you more. Western Australia and the Nullarbor are notorious for sustained strong winds. On heavy wind days, consider whether driving is worth the stress and fuel penalty. Sometimes a rest day at camp is the smarter call.

Daily driving limit. Towing a big rig is more tiring than towing a small van. The constant mirror-checking, wind adjustment, and concentration takes a toll. Plan shorter driving days (3 to 4 hours maximum) and build in more rest days than you think you need.

Set up the van, unhitch, and explore in the tow vehicle. The best big rig strategy is using the van as a home base, not trying to take it everywhere.

Making The Most Of The Extra Space

The whole point of a big rig is comfort, so use it. The people who enjoy big rig travel most are the ones who lean into the advantages rather than apologising for the trade-offs.

Set up properly. You have the space for a full outdoor setup: awning, outdoor mat, camp chairs, a proper table, maybe an outdoor kitchen. Take the time to set up well at each camp. A well-set-up big rig site looks and feels like a temporary home, and that’s exactly what it should be on a long trip.

Cook properly. A big rig kitchen is a real kitchen. Full-size fridge, oven, decent bench space. Use it. Cook proper meals, bake bread, make a roast. You have the facilities that smaller setups envy. One of the great pleasures of big rig life is eating well every night without needing a camp kitchen.

Carry more. More water (longer between refills means better access to remote free camps), more food (fewer shopping stops), more gear (bikes, kayak, fishing gear). The payload capacity of a big rig, managed within weight limits, allows you to be genuinely self-sufficient for longer stretches.

Don’t apologise for your setup. The Big Lap community includes every setup from a rooftop tent on a ute to a 30-foot fifth wheeler. Nobody who matters will judge you for your van choice. Travel the way that makes you comfortable, and enjoy the trip you’ve built for yourself.