Trofeo R on the track
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Trofeo R on the track
Hey Folks,
So, I understand that this may be a good choice, but needed some help -
“pirelli suggests to start warm up at 26 psi and maintain 30 psi at optimum working temp”
Questions -
1. What cold psi should I start front / rear ?
2. Whats the optimum temp in Deg Celsius ?
3. Watts the best front / rear pressure at that optimum temp ?
So, I understand that this may be a good choice, but needed some help -
“pirelli suggests to start warm up at 26 psi and maintain 30 psi at optimum working temp”
Questions -
1. What cold psi should I start front / rear ?
2. Whats the optimum temp in Deg Celsius ?
3. Watts the best front / rear pressure at that optimum temp ?
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Discussed ad nauseum here (search: trofeo): https://mbworld.org/forums/c63-amg-w...track-day.html
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Discussed ad nauseum here (search: trofeo): https://mbworld.org/forums/c63-amg-w...track-day.html
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Ok, so I hunted the thread and couldn’t really find the accurate answers.
I am thinking from other research that I did -
1. Start at 26 psi
2. Optimum temp is between 60-70 deg
3. Then aim at running 30-32 psi
I am thinking from other research that I did -
1. Start at 26 psi
2. Optimum temp is between 60-70 deg
3. Then aim at running 30-32 psi
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No. That’s actually all wrong.
In the thread, Wobble specifically said he started at 34psi cold on Trofeo R’s. Although it may be hot where you are, I guarantee that you will destroy your tires if you start at anything lower than 32psi.
Optimal temp is found using a pyrometer, and the tire temps will be in the high 100’s F, like 180F if I recall correctly. There is no set optimal temp because there are too many other variables. The optimal temp is whatever the pyrometer says is a consistent temp across three points on the tire. Or wherever you’re not rolling the sidewalls (use chalk). It’s in the thread.
Optimal hot pressures will depend on whatever temp the pyrometer says that you have consistent heat across the tread. If the center is hotter than the shoulders, tire is over-inflated. If center is colder than shoulders, under-inflated. With Trofeo R’s it seems to be around 47psi hot. However that will vary according to driving style, ambient temp, surface condition, track layout, etc. Trial and error. Take the temp immediately off the track before tires cool.
In the thread, Wobble specifically said he started at 34psi cold on Trofeo R’s. Although it may be hot where you are, I guarantee that you will destroy your tires if you start at anything lower than 32psi.
Optimal temp is found using a pyrometer, and the tire temps will be in the high 100’s F, like 180F if I recall correctly. There is no set optimal temp because there are too many other variables. The optimal temp is whatever the pyrometer says is a consistent temp across three points on the tire. Or wherever you’re not rolling the sidewalls (use chalk). It’s in the thread.
Optimal hot pressures will depend on whatever temp the pyrometer says that you have consistent heat across the tread. If the center is hotter than the shoulders, tire is over-inflated. If center is colder than shoulders, under-inflated. With Trofeo R’s it seems to be around 47psi hot. However that will vary according to driving style, ambient temp, surface condition, track layout, etc. Trial and error. Take the temp immediately off the track before tires cool.
Last edited by BLKROKT; Oct 8, 2019 at 12:45 PM.
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When we talk about the optimal temperature as per most tyre manufacturers isn’t it more accurately measured through the sensor inside the tyre valve rather than pure surface ? Personally , i hate poking the tyre around honestly!
However, Pirelli begs to differ and hence the confusion. Their sweet spot is 2.2 Bar which is around 30-32 psi at best. Check link below -
https://www.pirelli.com/tires/en-us/...pzero-trofeo-r
Further, they are soon about to release their own Tyre pressure and temp Monitoring sensor with their own app. This would be a game changer to kill all odds and guesses.
https://trackadrenaline.pirelli.com/en-ww/how-it-works
When you scroll down the links you will see the optimum temp and pressure settings.
However, I am currently using 71R and past experience on Cup2, they both are much higher pressure tyres and hence the major confusion
feel free to chime in
However, Pirelli begs to differ and hence the confusion. Their sweet spot is 2.2 Bar which is around 30-32 psi at best. Check link below -
https://www.pirelli.com/tires/en-us/...pzero-trofeo-r
Further, they are soon about to release their own Tyre pressure and temp Monitoring sensor with their own app. This would be a game changer to kill all odds and guesses.
https://trackadrenaline.pirelli.com/en-ww/how-it-works
When you scroll down the links you will see the optimum temp and pressure settings.
However, I am currently using 71R and past experience on Cup2, they both are much higher pressure tyres and hence the major confusion
feel free to chime in
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Bro...obviously it’s a Bluetooth valve stem that sends 100% perfect tread temperatures to your iPhone via the iTreadTemp app. 😀
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I completely understand that surface temperature is measured via a pyrometer or a IR heat scanner, but this is when the car is stationary only.
on the track, you don’t always have the ability to “pit lane” your car all the time. This is where a TPMS connected to your valve helps in gauging how hot or cold are you. Level of accuracy is up to you to consider.
enjoy your drink
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So the TPMS, measuring the heat of the air in the tire, is supposed to tell you how your tires are wearing. PASS
Its just a gimmick for people too lazy to dial in their car the right way
Its just a gimmick for people too lazy to dial in their car the right way
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Through pyrometer you have just the surface temperature which can change based on weather conditions by the time you hit the pit lane.
With TPMS provides uniform temperature inside the tyre. There are some TPMS which sense surface temperature which I find is a gimmick
Since the R compound works inwards to outwards, you can use the TPMS with Pyrometer to get the best of both worlds.
If you see the Pirelli and Cup2 tyres now providing the data via sensors, they rely on the principle of Tpms
What's surprising is that NOT a single tyre OEM has a defined process to read tyre temperature which in fact is the basis of performance for the R compound
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