A few of us were chatting on TPMS and pros and cons of using Chinese equipment and external sensors. Jotting the discussion here for everyone's benefit:
The TPMS of mine is currently on cig lighter adapter but will be hardwired.
I bought my TPMS system in November 2015 during an aliexpress annual sale and fitted it on the new tyres in December 2015. Till date i have had no issues.
My observations till date:
- No effect on balancing of the tyres. Sensors fitted after balancing and not while balancing.
- The theft proof nuts at the back really work. Not had an issue of them falling off or getting loose
- I usually am very skeptical of Chinese products. After fitment, i've checked air for the first few months every month (on cold tyres) and the readings exactly match with the sensor. After that have been checking alternate months and still they match.
- I've stopped filling air at petrol pumps and use my portable Bushranger pump to fill air on cold tyres around 1030am.
- Never felt it a big hassle to remove the sensors. And it's easy to remove them
- When my tyres are due for rotation, i remove the sensors and fit them in the pattern i need for rotation just before i visit the tyre shop. It's now easy to figure out which tyres goes where and there is a lesser chance of a mistake by the tyre shop guys.
- Over the past 10 months, i've just lost about a single psi of air. Not bad at all.
- For three reasons i did not want internal sensors:
While offroading, if we reduce the air pressure more, i'm scared of damage to the sensor when tyre folds over a rock
If the sensor fails or to replace battery, you have to unmount the tyre
Heard some internal sensors are not "slime" or balancing bead compatible. Plan to try out either of these soon
There are two others in my group using Tyredog TPMS (external sensors). They too haven't faced any issue till date.
As mentioned earlier, my front two sensors battery died and i needed to get new cells. For this i had removed the sensors from the tyres and put regular valve caps. To fit the valve caps, one has to also remove the security nuts. So i removed them and kept them very safely and by the time i got the batteries and installed them, i could not find these nuts. Im sure i'll bump into them sometime in the future.
Thankfully, there is specialised Nuts and Bolts store in Lamington Road, Mumbai called American Nuts and Bolts. They had the exact size. Bought for the two sensors plus two extra. Each costed Rs. 30/-
![Mitsubishi Pajero SFX - Project Overland Conversion-img_7413.jpg](https://www.team-bhp.com/forum/attachments/4x4-vehicles/1554995d1690422613t-mitsubishi-pajero-sfx-project-overland-conversion-img_7413.jpg)