Excuse me, I thought you were smart enough not to stake your life on electronic devices with panic buttons (the “in” thing for the last decade or so for “intrepid explorers”), that magically make a SAR team or helicopter materialize like a deus ex machina. Except when batteries go dead or the device gets wet. And if it works, there’s a small bill to pay afterwards.
Wow calm down dude.
A gps beacon or satelitte telephone is not a Deus ex mechanica but it is a whole lot closer to a Deus ex mechanica than a spare tire.
We took a car (with two spare tires!) through Baluchistan. And our crankshaft broke. I guess I should have had a second crankshaft with me?
But what if the fuel pump failed? You can never take everything with you, you can never be prepared for everything.
But debating a second spare tire for remote trips if a gps beacon or satelitte phone is not being bought is stupidity.
Fun fact about the trip through Baluchistan, wether we had the right spares and/or gps beacon with us didn't matter because within 20 minutes there was a Hilux pickup with some casually dressed guys with AK47s. Nothing would have helped. Fortunetaly, they turned out to be cops/levies as well
More on topic: Don't forget wheel bolts/nuts. Just like ruining a bunch of tires with not enough airing down, you can ruin your wheel bolts that way too. Although this is more for hard severly damaged tarmac roads than offroading.
About weight: If we are talking about Landcruisers/Defenders/Jeeps/G-classes, they typically can way beyond 3 tons fully loaded but is typically very unwise to undertake long overlanding trips that way. You will just break more stuff. Compared to the original weight of the car (typically 2 tons) a spare wheel and tyre is quite heavy.