Here's a few quotes that i have read upon, and that will be of any use, its mainly for track use that i think you will benefit from, my brother has it in his ford SMax 7 seater and has seen a much improvement from the road feedback and he's running on 20" rims, bit more comfortable and better handling when people in car. max is £1 a corner but u should be able to get it cheaper if you know people. Maby some of you guys who have used it could give us your verdict? will be putting it in mine and see how it runs when i get my car back. @ Nitrogen reduces the running temperature of the tyre. The moisture content of nitrogen leads to a cooler running tyre, which is advantageous when the car is operating at its maximum load and speed capacity. @ Nitrogen in tyres improves the ride quality. That gas is very slightly lighter than air and thus, benefits the tires in terms of un-sprung weight. @ It is assumed that Nitrogen increases tyre life. It reduces the operating temperature during times of load and speed and thus, enhances the life of a tyre. @ It is believed that nitrogen keeps tyre pressures more constant. The gas is assumed to provide more stable pressure range in connection to the tyre temperature. However, again, the factor is applicable in times of heavy load/high-speed conditions. @ Tyres are susceptible to loss of pressure as a result of being porous in nature. Due to its chemical structure, Nitrogen leak out slowly as compared to compressed air. Therefore, it slows the rate of pressure loss