marcvv

Was curious why Porsche didn't also have tire temp along with pressure readings for TPMS on the RS? Unless I'm missing it in another screen?

All my BMW's have both pressure and temp and it's great on track to know both. Anyone have a theory why Porsche left this functionality off the RS?

Also hope to break in my RS early spring and get to the track. What is the best break in heat cycle method for the tires on the GT3 RS? Do a few laps at 8/10th?

thanks

TRAKCAR

PSI only. Haven't heard to tire temps in a car, special BMW's.
Don't need to break in tires, just go easy for 2 laps to get the pressure up.

marcvv

My M5 and wife's '15 X5 even has tire temp. Many of the bmw's have tire temp and even of many that don't, it can be coded to enable it. When on the track at BMW M school we used both temp and pressure quite a bit. You can see the tires get slippery and feel it at specific temps on track at least letting you know traction is being lost from excess heat.

Anyway, it is nice to have and the technology seems to be available. For a 200k racing porsche I thought they would also have tire temp like all the M cars.

TRAKCAR

Cool, I had no idea. Thanks for posting.
WTF doesn't my 200K track car not have that is an excellent question marcvv!

Kobalt

+1

I asked Michelin about heat cycling/curing and they said that there's no need for that. (MPSC2)

GregJGT3

Taking tire temps to optimize tire pressure should be done properly by reading across the face of the tire, i.e inside face , middle, outer face. I am not aware of an onboard tire temp gauge that can provide that type of detailed readout information. So I would guess Porsche decided that just a simple "one read out fits all" didn't really give much useful information and didn't justify the effort.

marcvv

FYI I just was driving my 458 and totally forgot the Ferrari has tire temps too. I think all current models have them as well as a few of the previous generations.

So BMW and Ferrari have it but not Porsche which is why I thought I might have just missed the screen for it. I do not know if Mclaren has tire temp sensors or not but am curious.

GregJGT3 - you are correct that ideally temps should be taken across the face of the tire. Even though the tpms isn't ideal it is a very helpful data point. For example I've seen tires down at 45 degrees and others over 140. Even if I don't have the face readout it is good to get the instant temp feedback just to get a decent idea where you might be. Also if you realize your tires start to give up at X temp based on the tpms then you at least can keep an eye on that as the tpms is relatively consistent in what it reports.

Anyway it's a "nice to have" feature. Maybe future Porsche models will incorporate temp sensors along with the pressure.

On a sidenote had decent weather today here in Northeast so got the GT3 RS and the 458 out to stretch their legs and keep those nasty winter flat spots off those cold tires!

PhilT3 (PT3)

I agree. It may not be ideal, but it still is a data point that can be used.

Alan C.

Is the tire temp noted just an extrapolation from the tire pressure delta?

DRPM

I'm pretty sure it's actual internal tire/wheel temp in the 458
Not a Charles/Boyle interpretation

JCtx

Don't think so: 2007 F430 nor 2011 Cali had them. And yes, McLarens have it, but not sure about the new 'baby' 570.

C.J. Ichiban

Mclaren has tire temps also. Not as accurate as a laser gauge to three spots across but when i am tracking the P1 or LT and I see that one tire is at 177* and three others are at 150 I know I need to stop drifting.

The highest tire temps I've seen indicated on my macs are over 185* and that is only going about 90% Chris Harris