[houstonT]

I can't even.......I'm just like WTF is going on. I'm not new to cars, not a rookie to mods, etc....insanity.
Peter

 

[VGJ]

He then put my R888R on the other OEM set. It worked.

So this suggests that it's not the tire, in and of itself. Therefore, it's some interaction of these tires and your particular wheels and tpms sensor. Can confirm by borrowing another 765LT (yeah I know, not practical at all) and trying your wheel/tire/tpms combo on the other 765 vehicle. The OEM wheels you borrowed, are they the same model wheel ? Theorize maybe the sensor isnt sitting in the precise location because of the thickness added by paint or powercoat. Lastly, can consider a new set of OEM wheels in gloss black, if you love these tires...I know, it all sounds fucked, I'm sorry.

 

[Excelsior]

I'm going to repeat this one last time. It's the wrong TPMS sensors being ordered or an idiot tech that doesn't know how to do his job, or both. It's logical deduction, those are the only possiblities left. I'm leaning towards an idiot tech because only an idiot would suggest the paint on your wheels had anything to do with it. Not even slightly logical.

 

[VGJ]

Is it confirmed your wheels and tpms work with any other tire out there apart from the 888? I know you mentioned "they" put back on the trofeo and it worked in your first post, but have you personally confirmed this?

 

[houstonT]

I misspoke.....we then put the R888R on OEM wheels and it did NOT work on my car. Sorry. Only other thing to try is to put my OEM wheels/R888R on another 765. The other set of OEM wheels were the diamond cut ones.....but it can't be the wheels as my R888R on his OEM wheel didn't work.
Peter

So this suggests that it's not the tire, in and of itself. Therefore, it's some interaction of these tires and your particular wheels and tpms sensor. Can confirm by borrowing another 765LT (yeah I know, not practical at all) and trying your wheel/tire/tpms combo on the other 765 vehicle. The OEM wheels you borrowed, are they the same model wheel ? Theorize maybe the sensor isnt sitting in the precise location because of the thickness added by paint or powercoat. Lastly, can consider a new set of OEM wheels in gloss black, if you love these tires...I know, it all sounds fucked, I'm sorry.

 

[houstonT]

I hear you man, but it was the Master Tech at McLaren Dallas (Avondale) and then it was Kenny Tran and his team at Jotech Motorsports (both went through the exercise). Candidly, I trust Jotech more than anyone else as I've known Kenny and his team for 20 years.
Peter

I'm going to repeat this one last time. It's the wrong TPMS sensors being ordered or an idiot tech that doesn't know how to do his job, or both. It's logical deduction, those are the only possiblities left. I'm leaning towards an idiot tech because only an idiot would suggest the paint on your wheels had anything to do with it. Not even slightly logical.

 

[houstonT]

Yes, Jotech confirmed this and verified with pictures.
Peter

Is it confirmed your wheels and tpms work with any other tire out there apart from the 888? I know you mentioned "they" put back on the trofeo and it worked in your first post, but have you personally confirmed this?

 

[VGJ]

I misspoke.....we then put the R888R on OEM wheels and it did NOT work on my car. Sorry. Only other thing to try is to put my OEM wheels/R888R on another 765. The other set of OEM wheels were the diamond cut ones.....but it can't be the wheels as my R888R on his OEM wheel didn't work.
Peter

Wow, what an ordeal. I feel for you. At this point, with all the info you have given, it sounds like it's the R888R that you have. Maybe a batch that was out of the norm or different in some way to the R888R's that have worked for other 765LT. I guess you can compare the tire sizes/specs you are using to those who have used them successfully on their 765's. I'm totally guessing, but I'm theorizing with you that somehow it's the metal belts / beads in this specific set of yours that are somehow interfering more with TPMS sensors. And yeah, if you could find and hook up with another 765 that has a working set, then you could experiment with them by swapping out wheels/tires etc... If not, consider another set of R888R's (either same or different sizing) or just abandon ship? Good luck man.

 

[rnixon]

I misspoke.....we then put the R888R on OEM wheels and it did NOT work on my car. Sorry. Only other thing to try is to put my OEM wheels/R888R on another 765. The other set of OEM wheels were the diamond cut ones.....but it can't be the wheels as my R888R on his OEM wheel didn't work.
Peter

This is getting a bit ridiculous. Much as I'm curious as to why this isn't working, it's time to say that it should not be your problem. TPMS must be able to work with non-OEM tyres, or there is a, warrantied, issue with the car's design or manufacture. This should firmly be for McLaren to diagnose and fix, at their expense. With that said, I'd also ask Toyo if they have had reports of TPMS not working with recent R888R tyres.

One complication is that this is a digital system. It could be that the signal is of very low quality (e.g. bad ground, TPMS receiver, interference, etc) when it works, so minute differences are enough to stop it.

Good luck,

Roger

 

[houstonT]

McLaren Dallas basically told me "we swapped TPMS sensors, diagnosed no issue with the TPMS module, and neither was the culprit. So we tried OEM tires, and voila, it worked...we are done, get OEM tires."

Toyo was baffled as well...of note, I am the founder and owner of TX2K, so I know a thing or two about cars...this is FREAKING RIDICULOUS.

Of note, the newest R888R are 3-ply whereas older R888's where 2-ply. I wonder if that's it? Ir just as you stated, the digital system is just low quality.

Lastly, I bought on my own dime a new OEM TPMS module, thinking that maybe mine was ok but "weak"....that didn't work LOL

Peter
p.s. I'm going to see if I can put my OEM wheels/R888R on another 765 and see if it reads...if it does, it's something with my system and I'll fight McLaren to figure it out...if it doesn't, OEM tires, here we come...

This is getting a bit ridiculous. Much as I'm curious as to why this isn't working, it's time to say that it should not be your problem. TPMS must be able to work with non-OEM tyres, or there is a, warrantied, issue with the car's design or manufacture. This should firmly be for McLaren to diagnose and fix, at their expense. With that said, I'd also ask Toyo if they have had reports of TPMS not working with recent R888R tyres.

One complication is that this is a digital system. It could be that the signal is of very low quality (e.g. bad ground, TPMS receiver, interference, etc) when it works, so minute differences are enough to stop it.

Good luck,

Roger

 

[Tuxiemama]

They are inferring that the R888R's have more steel in the belts than the OEM Trofeo R's and that's what causing interference resulting in TPMS not reading. Also, I have several friends running R888R's in back and OEM Trofeo R in front with no issue. I asked the dealer if the front or rear was giving the error code and they told me rear.....(shaking my head).

Peter

Should NOT be an issue... I've run (previously) R888 on rears and OEM on fronts with no issue and R888R on all 4 wheels with no issue... more likely a gremlin in the techo !

 

[Roxind]

I'll try an hypothesis here, but I might be talking nonsense.
Coming from an Artura presentation, the techs guys make clear that it's not possible to fit anything else than the specified Pirelli on that car. The sensors are specific to those tires and the car won't let you do a launch control if they are too cold or outside the recommended psi, etc.. By the same relation Sensors to car's computer, the different driving modes will be available or not.
Did you get a software update on your car? Did McLaren plan to push that software across the whole line of cars?

 

[ksp]

I may have heard the Artura has new tires with the sensors or transducers built into the tires, different tech to what's on the 765 etc. Not sure if it simply identifies the tires or has pressure and temp sensors as well.

 

[houstonT]

Did you run those combo's on a 765LT?

Should NOT be an issue... I've run (previously) R888 on rears and OEM on fronts with no issue and R888R on all 4 wheels with no issue... more likely a gremlin in the techo !

 

[invisiblewave]

I'll try an hypothesis here, but I might be talking nonsense.
Coming from an Artura presentation, the techs guys make clear that it's not possible to fit anything else than the specified Pirelli on that car. The sensors are specific to those tires and the car won't let you do a launch control if they are too cold or outside the recommended psi, etc.. By the same relation Sensors to car's computer, the different driving modes will be available or not.
Did you get a software update on your car? Did McLaren plan to push that software across the whole line of cars?

This is interesting. The push is clearly towards making it more difficult to run anything other than the OE tyres.

 

[houstonT]

It's POSSIBLE........my car did have the 1 year service done a few months ago.........the thing that puzzles me is that others run the R888R on the 765LT with no issue. Anyhow, OEM tires going back on soon, if that solves the problem then we'll know FOR SURE that for whatever reason, on my car, I have to run OEM tires. Frustrating for sure.
Peter

I'll try an hypothesis here, but I might be talking nonsense.
Coming from an Artura presentation, the techs guys make clear that it's not possible to fit anything else than the specified Pirelli on that car. The sensors are specific to those tires and the car won't let you do a launch control if they are too cold or outside the recommended psi, etc.. By the same relation Sensors to car's computer, the different driving modes will be available or not.
Did you get a software update on your car? Did McLaren plan to push that software across the whole line of cars?

 

[rnixon]

Coming from an Artura presentation, the techs guys make clear that it's not possible to fit anything else than the specified Pirelli on that car.

That doesn't sound like a good move for owners, as tyre performance moves on, and some will want different characteristics. However, I suspect that it's marketing, as they won't make the sensors or receivers.

 

[tozzy234]

I'll try an hypothesis here, but I might be talking nonsense.
Coming from an Artura presentation, the techs guys make clear that it's not possible to fit anything else than the specified Pirelli on that car. The sensors are specific to those tires and the car won't let you do a launch control if they are too cold or outside the recommended psi, etc.. By the same relation Sensors to car's computer, the different driving modes will be available or not.
Did you get a software update on your car? Did McLaren plan to push that software across the whole line of cars?

That is not a software thing. The artura uses specific pirrelli tires that have the sensors inside the tire vs attached to the wheel like every other model

 

[rnixon]

That is not a software thing. The artura uses specific pirrelli tires that have the sensors inside the tire vs attached to the wheel like every other model

It's not clear if the communication uses the existing TPMS comms, extending the existing protocol, or if it's entirely new. I would be surprised if it's not possible to get sensors that are compatible with the McLaren-side hardware and software.

 

[houstonT]

I'm still in disbelief to be honest...I've swapped OEM TPMS sensors, OEM wheels (with R888R on them - not my wheels), OEM TPMS module, refinished my OEM wheels and now the only thing left is the OEM tires. I will have them mounted next week and we will see.
Peter