Perth,Exmouth, Ningaloo, Coral Bay, Monkey Mia, Kalbarri, Mt Augustus.

As it's well maintained I would not be worried about the vehicle.

I don't think you need extra fuel. From Gascoyne Junction to Mt Augustus is around 300 Km, and as long as there's fuel at Mt Augustus Tourist Park you should be OK. I don't think any of the other sectors is longer.

The debate about a second spare is always tough, our view is that one spare is enough (we carried two around Australia and needed only one, on one occasion; we carried two around Africa and didn't have a single puncture; we carried one around South America and needed only one). As long as you have a repair kit, carry a compressor, and look after your tyres you should be OK I believe. If your trailer has tyres which are a different size from those on the vehicle, then one of each size would be sensible.

If you're planning to follow the coast from Exmouth to Ningaloo (via Turquoise Bay etc.) I suggest asking locally about the condition of the road, which when we were there was reportedly not good (we chose to explore Ningaloo from Yardie's Homestead, then return from Oyster Stacks to Exmouth and then to Coral Bay so have no idea whether the road directly from Oyster Stacks to Coral Bay would have been OK).

When we planned to go to Mt Augustus it had rained heavily and the roads were closed, so we'll have to return some day.

Looks like a great trip!

I agree with Alan, good advice.
170,000 k isn’t that much these days, a lot of vehicles engine and drive train and mostly the rest of the vehicle, can do 3 to 400 thousand and more without any problems.
Have a great trip !

Tony : you shouldn't have any problems with your vehicle.. but have you done any pre booking ..
School holies 1st 2 weeks in July, we are finding things are filling quickly..
In regards to tyres we have not done a tyre in the last 10 years of this tyre of touring with the best quality.. the question will be your trailer tyres
We will be touring in 2003 300,ks LC & 2012 170, ks ranger & are very confident of no problems.. good luck with your plans .

An alternative view on tyres.

What has been said above is ok if you are using Light Truck tyres, if using Highway pattern then I urge you to reconsider. There are many rocky patches on the dirt road roads and creek crossings.
Highway pattern tyres are more prone to puncturing especially the sidewalls.

Sounds like a great trip.
Having travelled most of those roads in last few years I wouldn’t have too many fears.
Carrying extra fuel might save you a few dollars but it’s probably not necessary.
Good advice above on tyres .
Check the bearings on the trailer.

Cheers

.
Hi Tony,

If your vehicle has not seen some stress for a few years I suggest you do a day trip of several hundred kilos just to try it out before heading off on your July trek. This will test your transmission and cooling system etc.
I have seen a number of people suffer difficulties on the first day of a trip who said that the vehicle had given no problems running around the suburbs.

You should ensure you replace or repack your trailer hub bearings before this trip. Also check the leaf springs and carry parts to fit.
.

For our first outback trip (albeit on good sealed roads all the way), I was concerned about the fact that our Magna had 150000 km on the clock. I threw in the tension wrench, W/S manual, full tool kit - enough to virtually do a complete overhaul on the roadside. Needless to say, because I was prepared, nothing went wrong. In fact, while the Magna was using 1 L of oil in 1000 km at home (short runs, cold starts etc), it used 0.5 L in 10000 km, and by the time we got home it was down a full litre in 14000 km. Then it was back to 1L per 1000 km again... Modern cars if maintained well should last at least 300000 and probably more like 400000 km. A friend of mine has a fleet of Toyota 4WDs. All of them have done over 550000 km and are still on the original rings and bearings. They have had the heads re-done because they didn't do the valve adjustments, but the rest of the cars have been reliable.

As for tyres, good AT tyres would be advisable, or if this isn't an option, a second spare would suffice. It is easy to cut a sidewall. If you didn't want to carry a full second spare wheel, you can carry a spare tyre carcass and fit that should the need (and your ability) arise.

Since you have a manual transmission, I think that that part of the mechanicals should be reliable enough for the trip. If it was an auto transmission, I would recommend that you get the transmission serviced before you go.

Carry plenty of water with you as well, because should you have trouble out there, you could be stressed by the lack of water. Needless to say, if you go properly prepared, you will have no troubles and enjoy the trip.

Thanks for all the info. Now have 2 spare wheels & tyres (glad to be rid of the 80kph spare).
Booked in without trouble at Kalbarri, Carnarvon, Gascoyne Junction, Mount Augustus & Monkey Mia.

Hi Tony
Good luck with your trip. Might see you there. I am in the same area late July, August and September. Kimberley, Karajini, Exmouth, Shark Bay returning home in Sept via the Gunbarrel Hwy.
As someone else here mentioned, I strongly recommend Light Truck Series tyres. Load range D minimum or preferably E. (118/123). Not so much worry about HT or AT pattern, but Load Rating is important.
Passenger ply tyres (6P) do not tolerate heavy loads and sharp rocks. I totally destroyed a brand new set of Cooper ATRs on the Gibb River Road in 2006 because they were 6ply passenger rated tyres and I had too much load, in hindsight ran them too soft and drove too fast. Basically they get too hot, the rubber gets soft then puncture time. Since then I have tried many brands Cooper, BFG, Mickey Thompson, and have had very few problems, but they are always Light Truck Series. Much stronger construction and much more durable.
I don't worry so much about brand or tread pattern but I do worry about the load rating, how much weight and running at the appropriate pressure and speed.
I guess if your X Trail and trailer is only lightly loaded and you took it really steady you might get away with passenger ply tyres, but it is a risk.
I have TPMS to keep my eye on pressure and temperature and that is the best $200 ever spent.
Feel free to PM me if you wish and maybe we could compare itineraries and catch up
Good luck
Cheers
Peter

Hi Tony
Just out of curiosity, where are you staying at Kalbarri? I was looking at Murchison House Station that looks really interesting for bush camping and 4WD, but $50 per vehicle access fee plus the camping fee? Wow. Probably reasonable value if staying for a week but no way am I going to pay $75 for 2 adults for a single night of bush camping with no facilities.
So maybe Big River Ranch just down the road.
Have you planned anything yet for Kalbarri or heard of any other good spots?
Peter