Can I fit unimog 20" tyres onto 20" Range Rover rims for my sankey?

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Jinjah Paul

New Member
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Location
Hull
Hi all,

New to the forum, and thought I'd kick of with a bit of a mad question. I'm currently looking at building a expedition trailer to go on the back of my 1960 100" hybrid.
The Landy is pretty highly modified and in fairness pretty high off the ground. Between having a 2" body lift, and a 2" suspension lift my trailer doesn't sit flat unless I use a drop adjustable tow hitch with my nato hitch. As we all know these rattle and bang and crash and drive you insane. That coupled with the fact that my hitch spends more of its time in my kitchen than on the Landy at the moment to prevent it becoming someone's midnight spares! So I want to drill, sleeve and weld my rear cross member so I can permanently fit the hitch.
If I centralize it on my rear cross member it'll be about 5" up from where the sankey would like it to be, so I need a plan.
Thinking this end goes, I've got a mk3 sankey with discs etc that the chassis is great and the tub is tired so plan to whip the tub off and make a start on an expedition trailer. I've got a set of hub adapters (bought off eBay with no picture as wheel spacers for £75, but when I got there they are to change down to the 5x120 stud pattern).
I'm wondering if I can buy three 20" Range Rover or discovery wheels that will fit the 5x120 adapters, and then use some unimog 41" tyres which would level the whole thing out, improve the ground clearance of the sankey and make it all work how I want it to.
Question is can I? Can't find anywhere that tells me how unimog tyres compare to rangerover ones with regards to beads and wall thickness. The main problem I could foresee is that if the tyre walls/beads are too thick they may foul where the valve comes inside the wheel, or the bead will be too tall or wide or generally not fit!
Other things I've considered are raising centre of gravity 5" may make it unstable, but I have plans for a baffled water tank within the chassis and a very light weight main body (learned to tig weld aluminum and am wanting a project to practice with partly!) hoping the spacers will give it a 100mm wider track which will hopefully help too! Also think I'll put new bushes in the anti roll bar and a set of new shocks on there to keep it stable.
I know people use the unimog wheels on the 101 forward controls so just hope someone could let me know how the tyres would compare to normal tyres, and I'm always happy to hear of any pitfalls I've not thought of!
Hope that's ok for a first post and if it looks like it's doable I'll post some pics if people are interested once I've cobbled together all the bits I need!
 
You may be on a high Road to nowhere mate as, I'm not define but pretty sure sankey trailers are now illegal to use on the road in the uk. As I went to buy one for a project and was told by my mechanic not to bother as they ain't got a breakaway cable which activates the breaks automatically if it separates from the tow car. It is aparently a legal requirement for all trailers now and the is no get out grandfather clause. Though I will have to look up the legislation.
 
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Ah right then. Should have no problems, my bad. Probably the best way to do it would be to get hub centric spacers made up with the unimog bolt pattern then just fit unimog wheels.
 
the issue you will have is the tyre bead is not correct for the range rover rim, I fitted xzl (46") on my 110 on 20" range rover rims as a trial before finally settling on 40's on correct rims. although they went on the rim I was advised that in an accident I would have been hung , drawn and quartered for fitting an unsuitable tyre onto the rim (void insurance & in worst case criminal proceedings), W profile rings a bell but it was almost 4 years ago. Im currently looking at the same issue as the 110 sits 14" over standard height.
my solution is to spring over axle my sankey (like the old series mod) and fit extended shackles to get approx a 6" lift on the sankey

Cheers Steve

Cheers Steve
 
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