Originally Posted by mumbaikar
my brother in law has a 2003 zen mpfi. now the air pressure is decreasing quite rapidly and has to be pumped with air every week.
Any idea gurus as to why this might be happening? is it possible that the rims have got rust and tats leading to the loss of air? is it must to go for alloys with tubeless? please help
Reasons for the above issues could be:
1) Puncture; (probably more than 1) if this is limited to a specific Tyre.
2) Loose Air Valve.
3) Improper meter reading in the air-filling machine at petrol pumps.
How many kilometers have the Tyre run from previous change? In case more than 40-50 Thousand then its time for changing them.
As a suggestion, it would be better to use Nitrogen in Tyre as it keeps the Tyre cool and doesn't need frequent top-up. Once in 3 months and that to 3-4 PSI. Another major benefit of the Nitrogen gas is it does not lead to frequent punctures.
My Honda City in 3 years got only 1 puncture.
Also, When you are getting your car's present Tyre checked for puncture then ensure that there is no puncture in the side wall of it since side wall punctures make the Tyre useless. There is also a puncture repair called as "Mushroom Puncture" which is way better than the ordinary tubeless puncture repairs. It is slightly costly i.e around INR 150/ puncture but effective.