Its the weight. We are ridiculously strict on weights and carrying a spare and the tools to change it is a no go. Plus drivers here haven’t got a clue how to do it these days, plus the legal implications
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I remember my dad managing to break his ankle jumping on a breaker bar, trying to change a tyre on his lorry back in mid 70s … but one question what is the stuff you brushed onto the rim… is it different to the bead lubricant, I have seen it done when i have had a tyre on the car done, is it some sort of glue for the bead
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Its just another lubricant, just a bit less slippy, when you fit them and its all sloppy, the buggers become a pain to actually go on. You need a bit of grip to get them started
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I always thought it was a glue … so the only thing holding the 30ish PSI of air in the tyre is the mechanical seal of tight rubber against the rim …
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Yep. Pressure is an incredible thing when you sit and think about it.
As long as its contained…
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With bicycle tubeless tyres, you have to make them pop/seat onto the rims by over inflation. Is it the same with this scale of tyre?
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How do you balance the wheels? You know, those little lead weights they put on the inside of car rims. Do trucks have these?
Yup. Wince and wait for the tinnitus
They generally don’t need them unless its a crap chinese budget tyre. But even they are much much better than they used to be.
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Sorry to hijack the thread, but that reminded me of the satellite ‘golf balls’ at Waihopi (New Zealand). They are actually inflated and although very low pressure, check out this video about how you have to break the seal to get the door open… It is also a very rare look inside an operational SIGINT facility.
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And a lot safer than the old split rims!!
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I’ve done probably over a thousand of them and evert single one i had my eyes closed whilst inflating with an old 2ft airline waiting for the end 
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The patrol version of our Army Landrover 110/Defender had split rims. Made it so much easier to replace a tyre in the field, but yeah absolutely terrifying to reinflate them.
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I will say that the wheel on the humvee are perfect bolt together split rim. No locking (death) ring. 
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So I have some roots in northwest of Germany. Visiting the area, there is plenty to see. Also the RAF Museum at the Weeze Airport with fabulous aircraft history to admire.
Anyhow, this post is not about this particular museum.
Being here with my son, we of course visit the local fun park “Irrland”, also themed around aviation to some extent.
In one area of that park there are some airplane-slide-play-things. Like this:
Comes with some passenger seats, slide in the rear and a twin seat cockpit.
Fun fact about it is the faux cockpit print.
That looks very familiar to some specific cockpit from a specific sim LOLOL
Kudos to whoever chose those
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And here I spend a full day changing two tires for motorcycles… Though I was a bit more careful with the rim and spend some time figuring out the right tricks/pressure points! 
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It doesn’t leave a mark on steel rims. Alloys i used a rubber bead guard or take them off from the rear if super shiny on front
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That was an amazing video! The physicality and efficiency is impressive!
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I’d hold on to the red book. Such a ubiquitous and iconic piece of work in flight training. I hope that I have mine somewhere.
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