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Old 10th December 2018, 17:17   #1
Becs512
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Default Tyre pressure sensor kits..Internal or, external?

I would really appreciate some advice.
I am thinking of investing in a tyre pressure sensor kit but, have not a clue whether it would be best to purchase an internal one, that fits inside the wheels or, external ones that fit straight over the valve.
Plus, if anyone has them fitted and can recommend a manufacturer, that would be great.
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Old 10th December 2018, 21:36   #2
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https://www.amazon.co.uk/Tyre-Pressure-Monitoring-System-Tools/b?


Good customer feed back. Uses external sensors. Quick to fit.----
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Old 10th December 2018, 22:31   #3
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I would not bother with any personally. Though I know many find them useful I am told every day of people getting false warnings. Even factory fit systems seem to be troublesome. One of my customers has a Rav4 still under warranty. She is so fed up with the false warnings she has told the garage to disable it.

Maybe I am old school but every week I check all the tyre pressures while they are cold and levels on the engine and top up the windscreen washer fluid.

SWMBO has pressure warnings on her Mini Cooper, this system works by measuring the tyre rotations compared with the others, good in theory until we had to replace one tyre due to some damage. She now gets a warning as one tyre has more tread than the others so rotates less even though all the tyres are correctly pressurised.
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Old 11th December 2018, 07:39   #4
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I'm with SCP440.

What's the reason you're thinking of getting the kit?

For me, it's just another thing to go wrong and/or cause you stress when it says something is wrong when it isn't.

Not for me but each to their own.

Andy.
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Old 11th December 2018, 08:48   #5
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Many thanks, I didn't realise they were so, prone to false readings..
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Old 11th December 2018, 09:12   #6
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Is it true also that if fitted they must be working properly at MOT time?
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Old 11th December 2018, 09:14   #7
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I have got a set of TyrePal external ones fitted to my 75 and also the Lexus and have had no problems. I find them useful as it is not obvious that low profile tyres are going soft.
Go for external ones and then you can move them on when you change cars.
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Old 11th December 2018, 19:11   #8
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Quote:
Originally Posted by Nick Greg View Post
Is it true also that if fitted they must be working properly at MOT time?
NO--------------------
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Old 12th December 2018, 12:38   #9
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My 300 being American came with them.

There are two types active and passive. Active has sensors (which cost several limbs to replace) and passive which is built in as part of the abs and will just moan when it detects odd rotation of a tyre.

My personal choice would be internal to the wheel. Protected from dirty and theft but a pain. It is nice to push a button and see the pressures tbh.
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