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1) which device do you use to control/check the tyre pressure ? digital ? analog ?

2) The Exige does not have a TPMS , did you install one ? 
   Michelin has the CUP2 Connect but for the moment not in good size for us.
 

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I use an analog gauge always buy the best quality 

Digital always look more accurate but that's not always the case and I'm old school 

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I use a small analogue gauge that fits in the pocket so I can check the pressure directly after entering the pits.

I kow the new exiges have tpms since a "low tirepressure" light goes on when pressure is low. Would be nice to be able to read out that signal somehow and see it while driving. Through the obd2 maybe?

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On 14/10/2018 at 09:58, razad said:

 

I kow the new exiges have tpms since a "low tirepressure" light goes on when pressure is low. Would be nice to be able to read out that signal somehow and see it while driving. Through the obd2 maybe?

I think TPM is only a requirement for certain countries, and I think it’s itpms where wheel rotation is measured, but haven’t looked into it

Edit: Actually have now looked into it and it is direct monitoring, with 434mhz wheel sensors part no: A132G6017F. and you also need the receiver B132M0376F. But I thought this was Gulf countries only, so a bit confused. Certainly never seen the light on mine

Edited by MrP_

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1 hour ago, MrP_ said:

I think TPM is only a requirement for certain countries, and I think it’s itpms where wheel rotation is measured, but haven’t looked into it

Edit: Actually have now looked into it and it is direct monitoring, with 434mhz wheel sensors part no: A132G6017F. and you also need the receiver B132M0376F. But I thought this was Gulf countries only, so a bit confused. Certainly never seen the light on mine

When driving on track I have 2bar in the tires hot.
fter after a longer break (lunch) the pressure is about 1,7-1.8. When starting the car I get the "low pressure" light.

What I would like to know is if it is possible to read the signal from the sensors with a reciever fron ebay that you can put on the dashboard.

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25 minutes ago, razad said:

When driving on track I have 2bar in the tires hot.
fter after a longer break (lunch) the pressure is about 1,7-1.8. When starting the car I get the "low pressure" light.

What I would like to know is if it is possible to read the signal from the sensors with a reciever fron ebay that you can put on the dashboard.

As it's the same part numbers as the Evora, then it seems to be reading the pressures as in this picture:

attachment.php?attachmentid=1130770&stc=

From the quick reading I have done, the signals are fed via the ECM and communicates via Canbus - this is for the Evora, but can't see the Exige being different. As for Canbus decoding, I think you need to look on LotusTalk. And to add although it may be the same parts, as our dash doesn't display the signals the ECM may not relay them, instead just alerting when below 75%

I'm not sure how the ebay displays get a feed so not sure if you can piggy back off the Canbus

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5 minutes ago, MrP_ said:

As it's the same part numbers as the Evora, then it seems to be reading the pressures as in this picture:

attachment.php?attachmentid=1130770&stc=

From the quick reading I have done, the signals are fed via the ECM and communicates via Canbus - this is for the Evora, but can't see the Exige being different. As for Canbus decoding, I think you need to look on LotusTalk. And to add although it may be the same parts, as our dash doesn't display the signals the ECM may not relay them, instead just alerting when below 75%

I'm not sure how the ebay displays get a feed so not sure if you can piggy back off the Canbus

I was thinking something like this recieving at 434MHz

https://www.ebay.com/itm/Solar-Wireless-TPMS-LCD-Car-Tire-Pressure-Monitoring-System-4-External-Sensors/253867796136
 

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8 minutes ago, razad said:

For the money it’s worth a try, if they are simple transmit/receive then you could in theory do it. I’ve just never seen it

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I was thinking about the same type of device.

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On 15/10/2018 at 12:15, MrP_ said:

I think TPM is only a requirement for certain countries, and I think it’s itpms where wheel rotation is measured, but haven’t looked into it

Edit: Actually have now looked into it and it is direct monitoring, with 434mhz wheel sensors part no: A132G6017F. and you also need the receiver B132M0376F. But I thought this was Gulf countries only, so a bit confused. Certainly never seen the light on mine

I have the euro spec Cup and when my tire pressure drops i get a warning on my dash

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3 hours ago, mark248am said:

I have the euro spec Cup and when my tire pressure drops i get a warning on my dash

Right, time to let the air out and drive around for a bit!

Edited by MrP_

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14 hours ago, Lo2zz said:

What tyre pressures do people run for road?

2.0 front 2.2 rear on Cup 2s
Thats 29/32 in psi.

Edited by razad

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A corollary to my previous comments with respect to calibration and consistency...

The above comments obviously relate to the use of a single high-quality gauge to set the pressure of all wheels.  The use of TPMS systems that directly measure pressure via independent pressure load-cells (as opposed to wheel speed) should not be relied upon for absolute pressure setting.

Whilst the use of a single external gauge to set pressure will achieve relative consistency between wheels (as the measurement gauge and related calibration are common between wheels), TPMS relies upon seperate sensors, calibration of which will be variable and highly unlikely to be consistent for pressure or ambient temperature.

In general, TPMS should not be relied upon to provide accurate absolute pressure readings.  The primary purpose of TPMS is to provide the driver with early warning of a significant tyre pressure issue, whilst the vehicle is being driven, prior to occurance of catastrophic failure and/or loss of control.  Additionally, TPMS systems that utilise wheel-speed detection cannot detect a gradual pressure change - such as a slow puncture or leakage from a faulty valve or rim seating.

Consistent with good practice, we all check our tyre pressures (and condition) before every journey, don’t we?  😉

 

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little pictures regarding my experiences with tyres during the last three years.

 

tyres.png

 

 

TPMS is interesting for road usage to identify quickly a problem. It could be also interesting during a trackday (like the Michelin connect system) to detect pressure changes from an optimal configuration measured previously with a reliable instrument.

Otherwise concerning the CUP2 (only CUP2) 30 PSI front/rear is clearly not a good setup for me 😱😢.  30/32 front and 32/34 rear provide a very good grip and reduce the destruction on the tyre sides.

As I said in a previous post checking tyres before, during, after a trackday is MANDATORY. I know that it could be boring, but you have to.

I didn't find for the moment a good aftermarket TPMS system to buy and test.

Regarding the tyre pressure I used a little digital device from Michelin

 

Michelin-Tyre-Pressure-Guage-SDL32077243

 

 

 

 

 

 

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12 hours ago, geartox said:

 

Otherwise concerning the CUP2 (only CUP2) 30 PSI front/rear is clearly not a good setup for me 😱😢.  30/32 front and 32/34 rear provide a very good grip and reduce the destruction on the tyre sides.

 

 

 

Wow, I thought I was unlucky with my single delamination of a ZZR on the 'ring this year. Thanks for sharing the picture.

Regarding your Michelin experience, I follow the reference below (states an optimum working range of 33-39psi depending on application), and have similar good experience to you. I have started with 33psi all round.

https://www.michelin.co.uk/high-performance/sport-driving-FAQ/checking-tyre-pressure

 

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