Wow even better conversion nice again.

The air pump is not very big and the tire is huge. Does your car have a sub woofer I would bet there is room for it in that compartment.

The air hoses are just simple things. They have fancy ends so I would extend length in the middle with appropriately rated fittings. It's about 12bar pressure if memory serves.

I would make the added length the same for both sides even though one side will be closer to make sure both sides have similar reactions to pressure requests.

An easier fix would be to swap the space: put your lpg tank in the tire space and bring the pressure pump up into the boot it's barely bigger than a gallon of milk you could even keep the little army helmet dome to bolt it to the floor. I suspect the hoses may be long enough to do that without modifying

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2011 E70 • N55 (me)
2012 E70 • N63 (wife)