If you’re new to the world of 4WDs you’re probably thinking, ‘what the hell do GVM and GCM mean?’ Well, you’re not alone. Even a lot of 4X4 enthusiasts struggle to wrap their head around, or remember the importance of these terms when they’re adding gear to their vehicle, or towing heavy items, like caravans.

GVM and GCM Explained

 

So, what do GVM and GCM stand for, and why are these terms so damn important?

 

Gross Vehicle Mass (GVM)

When we refer to a vehicle’s GVM, we’re referring to the maximum weight it can carry, including its own weight. This means that the GVM takes into consideration the weight of the vehicle itself (its body, engine, fuel and etc.), as well as the passengers and any 4WD gear that you add to the vehicle.

 

This figure is set by the manufacturer and is lodged with registration authorities. The GVM is also sometimes referred to as Gross Vehicle Weight (GVW).

 

Gross Combination Mass (GCM)

Although these two terms have quite similar meanings, a vehicle’s GCM focuses on the total weight a vehicle can carry and tow, while still taking into consideration its own weight.

 

This means GCM takes into account the amount of weight you can add to your 4WD, whether it’s with 4X4 equipment, or a towed trailer or caravan.

 

Do These Weight Limits Really Matter?

If you want to stay within the legal weight limits when you head out on your next off-road adventure, and of course, keep you and your passengers safe, while not over exerting your vehicle, then these weight limits definitely matter.

 

Exceeding the manufacturers specified GVM and your vehicle’s GCM is risky, and can damage your vehicle, especially on long trips, and get you in trouble with the law. If you’re unsure about your vehicle’s limits, talk to the team at Ultimate 4WD today.

 

Can You Get a GVM Upgrade?

If you need to increase the weight load limits on your vehicle, whether it’s because you really want that new 4X4 bull bar or just need to accommodate some more luggage for family vacations or a boy’s weekend out in the bush, you can get a GVM upgrade.

 

A GVM upgrade needs to be completed by an authorised workshop, to ensure the upgrade is not only functional, but also legal. Keep in mind, however, that increasing your GVM doesn’t increase your GCM capacity, it merely allows you to be smarter when it comes to towing a caravan or trailer, or adding a few extra accessories.

 

At Ultimate 4WD, we offer the following upgrades:

Vehicle

Factory GVM (Kg)

Upgraded GVM (Kg)

Payload increase (Kg)

Toyota Landcruiser 200 Series

3300

3800

500

Toyota Landcruiser 79 Series Single Cab

3400

4200

800

Toyota Landcruiser 79 Series Dual Cab

3300

3900

600

Toyota Landcruiser 78 series Troop Carrier

3300

3900

600

Toyota Landcruiser 76 series wagon

3000

3660

660

Toyota Prado 150 Series

3000

3500

500

Toyota Hilux

3000

3500

500

Nissan Patrol GU Cab Chassis

3400

3900

500

Isuzu D-Max

2950

3500

550

Ford Ranger

3200

3500

300

Mazda BT-50

3200

3500

300

 

 

To check out the 4X4 accessories available in Perth, and to learn more about the specifications of your vehicle, chat to the guys at Ultimate 4WD today. We’ll be able to give you all of the advice you need to get you on the road as soon as possible.