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I have a set of tyrepliers, and have used them a lot on all kinds of rims.
Yes Landrover rims are a bit tricky as they have a lip on the inside of the rim that acts as a kind of beadlock, using the tyrepliers on Landy rims you need to use a spacer as they don't have enough throw and you must start at the valve as this is where the lip is at its smallest. Once you have done a few it is fairly straight forward.
If I was to buy again I would opt for the R&R BeadBreaker as they are a lot easier to use on our alloy rims although a fair bit slower
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You can also get the lip machined down a bit by a wheel specialist.