Among all the mooted benefits listed above, the principle reason some folks go for N2 is that being a slightly larger molecule than O2, it tends to bleed less rapidly through modern rubber/synthetic compounds used in tyre construction, and hence reduces (but not eliminate) pressure loss.
Also, see http://www.getnitrogen.org/pdf/graham.pdf on permeation of gases through tyre rubber
I doubt the average punter is going to be travelling fast enough in this daft speed-restriction obsessed country to make some of the other benefits, like lower coefficient of expansion, matter a damn.
Cheaper to visit the servo every weekend, I reckon, for my style of motoring at any rate.
Last edited by Doug_MPS6; 19-04-2010 at 07:28 PM.
CP_e Standback & PNP; CP_e 3" SS Downpipe; Corksport FMIC with Top-mount K&N filter & OEM Ram CAI; Turbosmart BOV; Dashhawk; Prosport Boost Guage; JBR solid shift bushes; DBA 4000 Wiper-Slot front rotors; Hawk Ferro-Carbon HPS Street front brake pads (@ 69,000km); Sumitomo HTRZIII's in 225/45 x 18