Modified, a few things to note

It is because the vehicle has a higher demand will consider modification, while some modification projects and modified products such psychological advantage of people, often using exaggerated or even fabricated propaganda ploy, eager for the car owners to upgrade easily caught at this time . 
Rumors 1: tires filled with nitrogen lot of advantages 
"Nitrogen is an inert gas, if the tire inflated with nitrogen, not only the thermal expansion thus reducing the puncture easily occur,turbos for sale ,and a tire with nitrogen gas, but also more fuel-efficient and more comfortable, but are not inside of the tire due to oxidation of aging." 
Analysis: would say such a thing, or is there nitrogen inflated repair shop automotive beauty business, or is from there learned. This passage because the relatively large amount of information, we have to be resolved one by one. 
1 Nitrogen is an inert gas? 
Of course not only the inert gas "as helium, neon, argon, krypton, xenon," these types, and the nitrogen is just the ratio of the air which occupies the majority of the gas, the nature of 78% air, nitrogen, and 28% oxygen and 1% of other gases. In most cases, nitrogen is indeed very stable. 
Nitrogen with heat is not easy expansion? 
Although the coefficient of expansion between the different gases are not identical, but there are only insignificant differences,exhaust manifolds, the reaction is almost imperceptible on the tire pressure. 
3 nitrogen filling more fuel-efficient? 
Car's fuel consumption and engine displacement, drag car, the car ground friction, load the vehicle concerned, of course, the driver's driving habits. Why give the tires filled with nitrogen gas to fuel-efficient? Can not find a reasonable explanation. 
4 nitrogen filling more comfortable? 
The answer above, the same I do not know where to parse. 
5 the inside of the tire filled with nitrogen to reduce the aging due to oxidation? 
This sentence finally some theoretical basis. Yes, so-called oxidation, of course, is caused by the reaction of oxygen, and oxygen-pure nitrogen, to avoid oxidation of the natural tire. However, on reflection beneath felt wrong: the one in the car repair factory to the tires filled with nitrogen, can not advance the tire air evacuated, at best, is injected into the nitrogen remaining in the original air,racing parts for sale, and the air had a nitrogen content of the has reached 78 percent, the so-called nitrogen filling is nothing more than continue to enhance the proportion of nitrogen, it is impossible to eliminate the presence of oxygen; another most important is that the tires are so afraid of the so-called oxidative it? If the tire is not even in the life of the oxide also can not resist, then it can be regarded as qualified products it? And have you heard someone tires because "internal oxidation excessive" and scrap it? 
So, to all the benefits of nitrogen tire filling a car repair shop, but propaganda rhetoric, of course, absolutely no harm nitrogen filling, in theory, can indeed reduce oxidation of tires and wheels inside than ordinary air,exhaust manifold, but not much sense of it . Really want a safe and comfortable driving, in the final analysis to owners who stay a little thought, often check the tire pressure of the tire, so that in the normal tire pressure range. Was sharp objects piercing the tires subject to the severity of the decision to repair or replace.