That whole business of using 100% nitrogen in tires is a little strange to me. The reason I've been given is that the nitrogen diffuses through the tire more slowly than oxygen, the next largest component of air. I'm not sure that is true, but in any case it is only 21% of ordinary air, so even if it is, that can't be a huge effect. And, of course, tires are thick. I suspect that most loss of air pressure comes from leakage around the edges (in tubeless tires) and past the valve. I've noticed, for example, that tires with inner tubes lose pressure much more slowly than tubeless ones, but the increase if the tire thickness from adding a tube is minimal.
As for aircraft--there could be all kinds of reasons for using 100% nitrogen that might or might not apply to cars. The rise in pressure with temperature will be the same as for air, so I doubt that's it. Much more likely is that the rubber compound or other components have a problem with exposure to oxygen or water vapor--perhaps a concern for condensation inside the tire at low temperatures.