You have to consider the equation of weight + cost + room Vs. convenience + risk of total tyre failure + umm.. mortal danger in the event of running out of good wheels.

Mortal danger in Iceland I am guessing is low-ish, (lower still if you avoid the pickled fish). So perhaps just 5 good tyres is fine.


2006 Chenin Blanc (4.98 at Asda) chilled with a kilo of moules, oh yes. Although I am 66% less drunk than I could have been with the Prosseco... more equations...

rocks...
 

I would guess somewhere like Iceland the biggest tyre challenge is rocky roads and the danger of side wall splits? In which case the XZY is a darned good choice. Or, as Jasper is already in Aberdeen (so very little asphalt to Iceland!) how about some super rugged (and cheap) cross-ply tyres? Of course they will no doubt be even worse than an XZY to lever off a rim!
But yes, I would take a second spare or tyre (assuming you have the gear to change it onto a rim). For the price of a rim and tyre from Vass I would go for it.
Cheers,
Gil
(cheap Nescafe at this time!)

Mario
Soon driving back to Zim via Serengeti and Ngorongoro - then to Angola - so if you want to get out of a rut my truck'll be available in Sept!