Discovery 4 Roof Loading

[mowog]

I am trying to find some facts about the roof load capacity of the Discovery 4.

On the web site it says 75kg this is where the confusion starts for me.

I have seen a few Discovery 4's with the ARB roof top tent. By its self it is well within the limit.

But how does the roof handle 2 people and round 200kg plus when people are sleeping in the tent?

Is the 75kg figure a dynamic load figure? IE pounding down dirt tracks with 75kg on the roof... That 75kg would impart a bit more load as the car moves.

So is there a static load figure for the Discovery 4 roof?

[Redback]

LRA and the RTA have put this as the max weight for the D4 for stability reasons, however LR UK state a higher max capacity, 150Kg from memory.

So it's a warrenty issue from LRA and a saftey issue from the RTA/ADR.

Baz.

[mowog]

So that weight is based on whats allowed while travelling...

But the question is can the roof handle static loads over 200kg when camping...

[Redback]

So that weight is based on whats allowed while travelling...

But the question is can the roof handle static loads over 200kg when camping...

It probably could, how many Land Cruisers do you see with RTTs and assorted crap on the roof, can't see why a D4 can't, seeing as from the factory the D4 has a higher roof load rating.

Baz.

[sniegy]

Discovery 4 maximum roof load is 71.8Kg(less the weight of the roof rails & cross bars) for "Factory Roof Rails & Cross Bars".
Discovery 4 (http://landrover.tagworldwide.com/discovery/120/disco_120_en_AU.php)

For the Expedition Rack it lowers again to 54.3Kg(less the weight of the rack & rails)

So need to be careful when loading the roof.
While the vehicle is stationary it can increase, but i do not have a load reference for it tho'.

Cheers

[mowog]

Discovery 4 maximum roof load is 71.8Kg(less the weight of the roof rails & cross bars) for "Factory Roof Rails & Cross Bars".
Discovery 4 (http://landrover.tagworldwide.com/discovery/120/disco_120_en_AU.php)

For the Expedition Rack it lowers again to 54.3Kg(less the weight of the rack & rails)

So need to be careful when loading the roof.
While the vehicle is stationary it can increase, but i do not have a load reference for it tho'.

Cheers

The ARB roof top tent I have will be under the max load... That is until someone is sleeping in it... Someone must have some numbers on the max static load.

Or are these people with roof top tents pushing their luck?

[discotwinturbo]

.

But how does the roof handle 2 people and round 200kg plus when people are sleeping in the tent?

A long as its not rocking.....it should be fine.

[mowog]

A long as its not rocking.....it should be fine.

:wasntme:

[wallrats]

Discovery 4 maximum roof load is 71.8Kg(less the weight of the roof rails & cross bars) for "Factory Roof Rails & Cross Bars".
Discovery 4 (http://landrover.tagworldwide.com/discovery/120/disco_120_en_AU.php)

For the Expedition Rack it lowers again to 54.3Kg(less the weight of the rack & rails)

So need to be careful when loading the roof.
While the vehicle is stationary it can increase, but i do not have a load reference for it tho'.

Cheers

That is strange because on Land Rover Facebook page you can see three Discovery 4 starting an expedition from Geneva Auto Show to Beijing and they are loaded with one spare wheel (30 Kg) and four Fuel Jerry Cans which I think when you add all up it is more then 54 Kg.
Yahoo! - Website - Sunnyvale, CA | Facebook (http://www.facebook.com/yahoo#!/photo.php?fbid=10150560698082364&set=a.10150560697142364.358517.26698787363&type=1&theater)

[discotwinturbo]

In the uk they make a sweet looking rack....it is rated to 200kgs, and they advertise it openly.

[CaverD3]

More to do with folks foreting they have the weight up top and rolling it then blaming Land Rover. Reality is they will take a lot more load but gives a much higher centre of gravity.

[Fred Nerk]

The limits relate to loads when driving. The roof is also designed to support more than the weight of the car without crushing the occupants in a vehicle roll over. It will easily cope with a few sleeping adults. Just be careful if you roll over ;)

[Celtoid]

I did a lot of shopping around before I bought the Tradesman Oval Alloy rack for my D4. Most distributors stated that there are 'reasons' for the load rating that don't apply to reality. The Tradesman is rated at 150KG and I gathered that that number is being conservative.

Cheers,

Kev.

[discotwinturbo]

I did a lot of shopping around before I bought the Tradesman Oval Alloy rack for my D4. Most distributors stated that there are 'reasons' for the load rating that don't apply to reality. The Tradesman is rated at 150KG and I gathered that that number is being conservative.

Cheers,

Kev.

They are certainly a nice looking strong rack.

[mowog]

So it looks like the prevailing opinion is that the roof structure can handle one sleeping fat guy and his lovely wife...

Another thing I am looking at now is a new product from Track Trailer.

Pat Callinan's 4x4 Adventures - LATEST NEWS (http://www.mr4x4.com.au/index.php/latest-news)

I am trying to find out how much the basic trailer package is. From that I will add the racks to fit the roof top tent.

[rmp]

Sneigy has as usual the correct figures. Which are generally ignored by all and sundry, including Land Rover themselves - look at the G4 Challenge vehicles for an example.

BTW the limits for the Patrol and LC100/200 are 200kg. 75kg is on the low side for its class. But we won't mention payload of the Japanese cars then ;-)

The 75kg is also a moving load. Static, ie climbing up top it would be different, but nobody knows how much by because no manufacturer thinks to test it.

If the roof buckles, probably too much.

[Stuart02]

So it looks like the prevailing opinion is that the roof structure can handle one sleeping fat guy and his lovely wife...

Another thing I am looking at now is a new product from Track Trailer.

Pat Callinan's 4x4 Adventures - LATEST NEWS (http://www.mr4x4.com.au/index.php/latest-news)

I am trying to find out how much the basic trailer package is. From that I will add the racks to fit the roof top tent.

You mean the trailer, or the sleeper unit? The latter is a third party addon. Name escapes me. I had a squiz at the Caravan show - its pretty cosy (small), and has a weird internal string bracing system. You'd want to be athletic...
Out of interest, the base trailer is $14k!!! And weighs 590kg...

[mowog]

I found out the base cost yesterday... :eek: We already own an ARB roof top tent.

So today a new idea was born... Build my own trailer.

The father inlaw has a great workshop / machine shop he is retired and loves little projects. I am working through a costing exercise now using either Cruise Master Coil or Control Rider coil suspension.

I have found some plans that cater for the Cruise Master Coil suspension.

[baby rover]

Does anyone know about the safety of a roof top ten + 2 adults weight on a Freelander 2? the couple of roof rack people I have called said the landrover freelander roof capacity wont hold it safely but ive seen photos of FL2's with roof to tents :/

[SBD4]

Does anyone know about the safety of a roof top ten + 2 adults weight on a Freelander 2? the couple of roof rack people I have called said the landrover freelander roof capacity wont hold it safely but ive seen photos of FL2's with roof to tents :/

The maximum roof load for the FL2 is the same as the D4 - 75KG's. This is the maximum weight that LR recommends that will not affect the safe handling of the the vehicle, a dynamic load. The roof can handle more weight this if you think about the fact that must be able to survive a roll-over. If you load the roof up beyond the recommended weight then you need to be mindful of it and drive to the conditions keeping mind the increased centre of gravity.

You may get more info if you ask the question in the Freelander 2 specific forum here:

http://www.aulro.com/afvb/freelander-2/

These threads may be of interest:
http://www.aulro.com/afvb/freelander-2/175224-roof-top-tents-roof-racks.html
http://www.aulro.com/afvb/freelander-2/97612-fl2s-big-treks.html
http://www.aulro.com/afvb/freelander-2/68512-fl2-touring-options.html

[Tombie]

I had track quote me too...

After I stopped laughing I asked how???

Gouging people with deep pockets seems to be the business model :)

[HeliFNQ]

Having now read through the threads relating to max. roof load on a Disco 4 ( dating back to 2012), I am still unsure if the roof load capacity listed in the Owner's manual
(which states, 75kg), needs to be adjusted for off road as the manual is silent on this.

Does anyone know if we need to adjust the max. load when off road?

If this max capacity is reduced to 53.5 ,as per one comment, then after deducting the weight of a roof rack ( say 40kg), one only has 15 kg to play with, which makes one wonder, why install a roof rack?

[Tombie]

Having now read through the threads relating to max. roof load on a Disco 4 ( dating back to 2012), I am still unsure if the roof load capacity listed in the Owner's manual
(which states, 75kg), needs to be adjusted for off road as the manual is silent on this.

Does anyone know if we need to adjust the max. load when off road?

If this max capacity is reduced to 53.5 ,as per one comment, then after deducting the weight of a roof rack ( say 40kg), one only has 15 kg to play with, which makes one wonder, why install a roof rack?

75kg dynamic load at all times...

Thats all..