Yes it's true. I changed my tires @ autobacs recently n they
gave me a FREE Nitrogen gas top up, n after every few mths I can
return to ask them top up for FREE till e End of my tires'
LifeSpan.
1. My tires now dont get HOT when driving long distances easily n
becos' of tat, they dont EXPAND as much as normal air do.
2. Also it is less noisy now, but I can't be certain cos it could
be due to e new tires cos new tires also reduces noise.
3. Wat is "FC"?
If e ad claim its' safer n lower risk of tyre explosion, cant
denial its not true, but can say its bullshit cos tyres dont
EXPLODE in normal usage circumstances, n e chances of u getting one
is almost NIL.
Jus a word of advice, if it's free, feel free to go for it. Its not
wise to pay for it. The differences/improvements is only very
minimal n not worth our precious hard earned $$$. Betta wait till
when u nid to change tires, they will give u for free.
*Note: Nitrogen filled tires should not be repump @ those normal
airpumps @ petrol stations, it would defeat e purpose.
Hope my experience helps in ur decision making! 