Yes, that's what I found when going from 32 to 36 PSI; it was only 20 metres in 5.31 km (0.4%). This is a trivial difference; the main economy effect is the decreased rolling resistance at higher pressures.I think I'll try 35.
Have I got this right - the xtra pressure gives increased wheel diameter and thus more distance travel per axle revolution - so the speedo & odometer & MPG (which are based on axle revs) will be reading lower than actual - but by probably less than 0.5% ?
It might be worse than that. How can you be sure that they actually filled your tyres with Nitrogen? Even if the tyres are inflated and flushed 3 times, you'll only end up with 95% Nitrogen at best. I suspect that some places just do a sham fill and send you on your way with plain old air.Oh well it seems I paid AUD$30 for little benefits!
LOL, I agree, the only benefit is for the shop selling you the stuff.Filling tyres with Nitrogen might give a lower rate of deflation, but other alleged effects are imaginary. I used to work at a place where all sorts of gases were "on tap", but it never occurred to me to stick any of them in my tyres. Maybe Argon (inert gas) would have been better than air? Hey, how about Krypton?
No thermal difference between air and nitrogen. I think racers use nitrogen because it "seems like a good idea" and a cylinder of ntrogen is more convenient than compressed air and doesn't contain water.Unless you are a serious racer and your tires get hot because the friction, there is no point to spend money for a very very marginal performance.
But then again, that is my opinion