Caster corrected front radius arms.
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Mudding
Joined: Aug 2019
Posts: 126
Likes: 45
From: Nevada
Caster corrected front radius arms.
2001 Discovery 2
After adding a slight amount more lift the truck has lost its steadfast feeling. Squirells allover in the wind at freeway speeds and feels strange in turns like the rear end wants to swing out.
Went from a saggy 2 inch lift to a hd 3 inch which actually ended up being 4 inches of lift achieved.
Figure castor corrected arms make sense now.
3 degree(2 to 3 inch lift)or 6 degree(4 to 5 inch lift) im undecided not sure to aim over or under as my lift could vary 3 to 4 inch for the forseable future.
Where to source them and the needed bushings as well.
With that said I see what google returns Terrafirma, RTE, Adrenaline4x4 overseas.
Anyone got a heads up on local to USA sources or any experience with ordering? or a extra set haha
After adding a slight amount more lift the truck has lost its steadfast feeling. Squirells allover in the wind at freeway speeds and feels strange in turns like the rear end wants to swing out.
Went from a saggy 2 inch lift to a hd 3 inch which actually ended up being 4 inches of lift achieved.
Figure castor corrected arms make sense now.
3 degree(2 to 3 inch lift)or 6 degree(4 to 5 inch lift) im undecided not sure to aim over or under as my lift could vary 3 to 4 inch for the forseable future.
Where to source them and the needed bushings as well.
With that said I see what google returns Terrafirma, RTE, Adrenaline4x4 overseas.
Anyone got a heads up on local to USA sources or any experience with ordering? or a extra set haha
Rock Crawling
Joined: May 2019
Posts: 385
Likes: 199
From: Northern Virginia
I'm going to do the same thing in the Spring, as I hate the on-center squirmy feeling at highway speeds. And I only did a 2 inch lift.
Here are the only castor-correct D2 arms I know of, and none are cheap:
https://rtefab.com/product/offset-radius-arms/
https://www.roverparts.com/suspensio...us-arms/TF529/
https://groveautoengineering.com/pro...71a91ab2&_ss=r
Here are the only castor-correct D2 arms I know of, and none are cheap:
https://rtefab.com/product/offset-radius-arms/
https://www.roverparts.com/suspensio...us-arms/TF529/
https://groveautoengineering.com/pro...71a91ab2&_ss=r
4wd Low
Joined: Aug 2025
Posts: 11
Likes: 0
Bit of a necro thread revival but did you install your corrected radius arms? and if so, did it fix that vague steering you had? I've bought a disco with a 3" lift and the steering is an arcade game. I'll need to get some new arms but my lift sits right between the 3° and 6° corrected arms so will need to pick one once is closest I guess.
Thread Starter
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Mudding
Joined: Aug 2019
Posts: 126
Likes: 45
From: Nevada
Bit of a necro thread revival but did you install your corrected radius arms? and if so, did it fix that vague steering you had? I've bought a disco with a 3" lift and the steering is an arcade game. I'll need to get some new arms but my lift sits right between the 3° and 6° corrected arms so will need to pick one once is closest I guess.
Ended up going with the 6 degree adrenaline arms. 100% fixed the issues with handling.
My handling was maybe the opposite of your experience. I was squirrely as heck at speed and wandered allover before caster correction
But also it introduced more angle into the front driveshaft causing an immediate vibration in my heavy duty GBR front driveshaft. The Disco has been driven very little sadly and I'm yet to adress the vibration
Last edited by DodyDisco; Aug 18, 2025 at 06:10 PM.
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gulfcoastgorilla
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Jul 9, 2012 08:46 PM