Folks, I think before you start trashing an idea, maybe you should do a little research. I commute 40,000 miles a year. I run through a set of tires every 12 to 18 months. I put nitrogen in two new tires and air in the other two new tires on my Suzuki SX4. The left side, with air needs to be topped up or adjusted everytime the seasons change. The right side with N2 hasn't been touched in over a year and those tires are wearing better as well. I have been so pleased with the performance in my car's tires, I plan to try it in my bikes as well. Looks like the only way to do it is with one of those high pressure cylinders and a regulator to drop the pressure. This equipment could cost half as much as one of my bikes so I'll just take it to the shop where they inflate my car tires to test the idea.