When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I think 2.3/2.6 (bar, f/r) hot is good for street driving. Its 33/38 psi. Good compromise between grip & wear. More presssure and it gets slippery, less pressure and the car feels less responsive and you can feel some tyre rollover on the front even with +10° caster and -2° camber.
I obtain that pressure with 2.05 and 2.3 bar cold which is 30/33 psi I think.
I was full day on track and it was a little bit hot, i deflated tires several times and keep the door pressure (2.0/2.3) and looks like tires were very hot still.. maybe i was pushing too much or did something really bad with my driving style...Dunlops...
I was full day on track and it was a little bit hot, i deflated tires several times and keep the door pressure (2.0/2.3) and looks like tires were very hot still.. maybe i was pushing too much or did something really bad with my driving style...Dunlops...
They're going to be hot at the track, so the way they look is normal there (a little bit of a melted look).
Most notable is what looks like a clean area on the inside band of the tires? That would indicate an area that is not getting a lot of contact and would benefit from a camber adjustment.
They're going to be hot at the track, so the way they look is normal there (a little bit of a melted look).
Most notable is what looks like a clean area on the inside band of the tires? That would indicate an area that is not getting a lot of contact and would benefit from a camber adjustment.
i think its melted too muc? My friend with GT3 has not melted tires and he was definitely faster than mr
and yes, fully stock setup now.. will be changed next week for next track day
I was full day on track and it was a little bit hot, i deflated tires several times and keep the door pressure (2.0/2.3) and looks like tires were very hot still.. maybe i was pushing too much or did something really bad with my driving style...Dunlops...
It can be a bit tricky to find the optimal HOT pressure (hot is what you're targeting on track; cold pressure is sort of incidental). I found the Dunlops (on a GT3) tended to like the the 34-36 psi range when hot. Assuming you're not interested in geeking out with a pyrometer to measure temps across each tire, the quick and dirty trick is to look at the pebble disbursement on the tires when you first come off track. If they're mainly concentrated in the middle, your pressures ended up too high. If they're mainly concentrated on the outside edges, with less in the middle, you were likely too low. Once you find a hot pressure range that seems to work evenly across the tire, you adjust your pressures while hot (eg add or remove air when you first come off track). Whatever they go back down to while you're waiting in the paddock to go out again, so be it. It's extremely difficult to anticipate hot pressures from simply setting the cold pressures (unless you're using nitrogen). And often what "feels" better isn't necessarily the pressure that's optimal for the tire's performance. Many people tend to undershoot because it makes the car feel more stable, when a more "slidy" pressure might actually be faster.
The pressures on the door are good for setting cold pressures when you're just driving on the street. On track, all bets are off. They're not a horrible place to start if you have no idea where to start for the track, but they will almost always lead to pressures that are too high (ideally you'd make one or two mid-session adjustments in the first session of the day). And if you had to err one way or another, I'd rather start at the door pressures than taking a bunch of air out and possibly risking the integrity of the tire because of under inflation.
Also, a tracked tire should look completely scorched across the surface; how "melted" the tire looks is not an indicator of optimal or sub-optimal pressure.
It seems to want at least 31 F/37R, but I've been running 29/29 at autocross for a bit more grip. The race track function on the TPMS is handy to stop it complaining
Hi, just finished a 2 days session at the track with my Spyder, and I got a lots of alerts messages from the TPMS. I could not found the race track function. How to stop those TPMS messages?
Hi, just finished a 2 days session at the track with my Spyder, and I got a lots of alerts messages from the TPMS. I could not found the race track function. How to stop those TPMS messages?
Buy a GT4 or GT3.
I don't believe the Spyder has a track mode for TPMS.
waiiiit a second, there's a track mode for the TPMS in the GT3/4 etc. ? did not know that.
There is, but the only thing it really does is allow the cold pressures to go lower before the car complains. If it actually disabled all TPMS warnings or something, it might be useful. But if you're still "too low", even with circuit pressures selected, the car still sets of warnings (sometimes even in the middle of the session once your pressures are well above where they were at the start).
Full disclosure: I have not tried it with the 718 GT4 yet, but I'm not holding my breath it'll be substantiately different.
There is, but the only thing it really does is allow the cold pressures to go lower before the car complains. If it actually disabled all TPMS warnings or something, it might be useful. But if you're still "too low", even with circuit pressures selected, the car still sets of warnings (sometimes even in the middle of the session once your pressures are well above where they were at the start).
Full disclosure: I have not tried it with the 718 GT4 yet, but I'm not holding my breath it'll be substantiately different.
I believe that you are not correct, you can actually set the pressure that you want to use for the race tires then if you have a substantial loss in pressure in a tire it will warn you.
08-11-2020, 12:39 PM
