This thread has got me thinking, as Im just about to get some new tyres for my car.
How much heat is generated at highway speeds in 60 serries tyres, if its true that with nitrogen you could increase the PSI by say 2 PSi without having them over inflate on the highway, there might be some merit for short trips in fuel economy, by having a slightly higher inflation with nitrogen.
Any idea on how much to go up by?