isnt that just gunna put the car out of balance the other way then what it is now......??
No not really.
Land Rover HD springs for RRC are 160Lb per inch front and 180Lb rear with a working hydromat.
Discos have 155/215 dual rate rear springs to give theoretically a good ride and then load carrying once the soft rate is compressed. Their front standard springs are 133Lb, same as RRC.
So Land Rover usually have softer springs i n the front to give good ride and articulation. They only later added anti-roll bars to reduce on road body roll but this reduced articulation.
Before any arguments I have personally driven through Wombat holes on a test course in my old 2 door then watched a Disco with bars lift front wheels 20MM on the same hole.
My experience over 20years,( owning 3 RRCs and being a member of teh Range Rover Club, then the Discovery Club, so seeing scores of setups) is that relatively soft springs all round give the best articulation and heavier springs are only needed for high speed off road work to reduce bottoming in sharp dips or shelves, or heavier rears to handle big loads.
If you want to stay with a relatively stable car with a 2 inch lift and 31 inch tyres(245.75x16) then 160 front and 180 rears with load leveller are ideal for most mountain trail work.
I use LRA springs with 160 front ( green band) . these give 11/2 inch lift as I bought mine down from the 2inch lift from genuine OEM green band, with a load the front goes up and the car became twitchy at speed due to no caster.
My rears are LRA ( orange) which give 2 inch lift and 180 Lbs.
To me a good test is to drive some mountain tracks with your normal load that use articluation and have a look at the bump stops afterwards. If the bumpstops are not marked the springs are too hard. If they are marked heavily but you do not have a sensation of the car bottoming all the time on bumps then you are getting there. Also if you hear the front springs going "Booing" on articulation then they are too short and heavy, as this is the spring unable to bend as the axle goes down. You will soon know if the rears are too short vs the shock as the spring will fall out if not retained which I have seen on the Nissan trials when I was a competitor.
Once you pass this point you are into heavily modded territory , which is generally illegal and degrades on road performance greatly. I am sure there is someone else who can advise on this. Once you get past this anyway , the best traction aids are lockers which decrease the need for articulation. if you go bigger than 31 inch tyrees you will generally need heavily and expensively upgraded axles , or you will break axles and diffs all the time.
I had bigger axles and a Detroit in my 2 door and have a rear Maxi in my 4door.
In my experience ARB , King, and Lovells springs have always been too stiff.
The ARB guy once wrote that he disagreed witrh Rovers spring rates and that is why he made them like Jeeps at 220-250Lbs or more. Crazy to me and destroyed the ride. Also very arrogant.
Regards Philip A