Hi am thinking about installing TPMS on car and caravan there are 2 types-- external monitors attaches to valve but has to be unscrewed to top up air pressure. 2nd type-- internal monitor have to take wheels off and remove valve and fit internal monitor, both types send messages back to screen in car. The internal type can be topped up with air as required, no having to unscrew monitor. First type are bulbes and if you cut corner scrapping side of tyre could wipe out monitor. Ány one have experience with either type?
Hi Jeepnudger,
I have the former - Safety Dave. It's a good system but as you say, it's a pain to have to remove the device to adjust tyre pressures. I find I have to add an extra 1psi to cover the loss of refitting it.
It has saved me from one possible blowout so far.
Some Jeeps have the in-wheel system - is a better method but I don't want a Jeep!
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Warren
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If you don't get it done today, there's always tomorrow!
Depends on wheel profile, but I have used screw on types for a number of years in off road travel, using short valve stems & have never had any problem 'wiping out' the sensors. Have heard stories of tyre fitters wrecking internal types. also not keen on having to take tres off to replace if batteries/sensors need changing.
Frequent airing up/down is a pain with screw on types if using the lock collars, but I gave up using them a few years back, so no different to using normal valve caps - have never had a sensor lost or stolen yet.
Had a Tyredog system for 7 years until it died. Now have a Masten system. Tyredog had nicer (easier to read at a glance) intrface. Masten is more reliable (quicker) to pick up signal from sensors. Sometimes with the tyredog it could take a few kms before all wheels showed up.
Good to be able to monitor pressure & temperature in differing conditions.
We only have a car so only 4 to do. In the outback we are sometimes airing up & down daily. After half a dozen goes you get into an efficient routine. We find taking all sensors off, then do the air, then all sensors on is better. Careful to put the right sensor on the correct wheel.
If you have to exchange a wheel or 2, the sensors are easily moved to the new wheel.
It only takes a few minutes, just keep in your mind the inconvenience & expense saved avoiding a destroyed tyre. Have been there, a few minutes each day with sensors airing up or down is a lot less painful. Not to forget the peace of mind real time visual monitoring on your dashboard.
You don't need to spend 5 minutes each morning physically checking tyres.
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