GVM Upgrade - When more is a burden

Friday, May 15, 2015 at 19:36

Baz - The Landy

Story & Photos: Baz – The Landy


When I upgraded to my current vehicle, dare I say the new “Landy”, a Toyota 79 Series Dual Cab, I customised it to be used for long-range and remote travel.

This included having a canopy specifically designed for the vehicle to carry a range of equipment; long-range fuel tanks and ability to carry sufficient water and supplies.

All this comes with a weight penalty.

Configured in long-range touring mode the vehicle comes in at approximately 3,500/3,600kg with full fuel as it heads down the driveway with Mrs Landy, TomO, and me in the cabin.

The actual weight is in contrast to a GVM of 3,300kg off the factory floor.

This was corrected from the outset by upgrading the GVM to 3,900kg using a Lovell’s GVM upgrade kit, which has served the vehicle well so far without fault, but dare I tempt fate by suggesting that?

Toyota's combined axle weight limitation of the vehicle is 3,780kg, which equates to the GVM, and one can see that the Lovell’s approval is above the manufacturer’s combined axle weight limitation which has some consequences. Lovell’s have an approval to increase the front and rear axle loads above Toyota’s by 60kg respectively.

Many in the industry have questioned how the modification was ADR certified for use on this model vehicle given it surpasses Toyota’s axle rating, but it is all in order. Lovell’s have the approval which had to go through a rigorous testing program, but it is something to be aware of if using a Lovell’s upgrade on a Toyota 70 series vehicle.

In its current configuration my vehicle cannot be loaded to its maximum GVM as the load limiting factor is the approved rear axle weight where naturally much of the load is carried. As highlighted earlier this was increased with the GVM upgrade, however as for most vehicles, the total GVM is one factor for loading, limitations on each axle is another.

And in many cases this means some of the excess load carrying ability is available on the front axle only.

I am currently in the process of having the Tru-tracker rear wheel offset correction installed, which is a fully engineered and ADR compliant modification to correct the large offset between the front and rear wheels. However, this is approved for use on vehicles with a maximum GVM of 3,780kg which, not surprisingly, is the manufacturer’s combined axle load carrying rating of the vehicle.

In fact, if you look at all other GVM upgrades offered for this vehicle, none are above the combined axle weight of 3,780kg with the exception of Lovell’s.

You can read more about the Tru-tracker modification on the company's website.

The solution to resolve the “paper work” issue and it is essentially a paper work issue, albeit a bit of as “burden” is to have the GVM re-rated downwards to 3,780kg. This will be done at the time the engineer signs-off the Tru-tracker modification.

But if considering a Lovell’s GVM upgrade, or for that matter any type of upgrade it is worth giving thought to unintended consequences.

Possibly, more is actually a “burden”…at least it was with my GVM upgrade!


“Those who don’t think
it can be done shouldn’t
bother the person doing it…”
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