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tire temperature
01-14-2018, 05:21 AM (This post was last modified: 01-14-2018 05:31 AM by samsepi0l.)
Post: #11
RE: tire temperature
(01-13-2018 09:15 PM)Wolf_pd Wrote:  What are your lapspeeds on which tracks? I have run in IIRS for 12 years and tirestrategy and fuelstrategy were essentially two sides of the same coin to have a good result. Tire grip was a tricky thing at some high speed tracks.

oh boy, well I just raced homestead 1996 rectangle style, and I ran a 206mph lap in qualifying.

At fontana I think I was close to about 238?

I'm usually pretty quick. I do modify AI a bit but only to make it harder. Usually I'm around 98%, to 100% difficulty.

I race every race 100% length.

I have been adding 500 to each of the first three THEAT.

I think I need to add a little more
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07-07-2018, 09:47 PM
Post: #12
RE: tire temperature
Well, there are a few things to consider. The Homestead and Fontana tracks are not original tracks. You might have noticed that if there are issues, they usually arise on converted or created tracks.
That means the tire heat lines are usually borrowed from a different track and do not match the specific track conditions. For a road course edit this isn't much of an issue, but for oval and especially high speed ovals it can make a big difference.

I think we ran Homestead 96 in IIRS one time. Not sure about the speeds there anymore.
Fontana is a matter of which layout you are using, because there is a N99 and a N3 around and maybe more.
The last IIRS race was actually at Fontana (the N3 one).
Pole was a 248.346mph. Fastest final lap was 29.830s and the winning time needed for 100 laps was 51h25s3

Before you now think, that pole is so much faster than my 238. The winning driver just did 245mph qualy lap. There are a few guys that are able to run insane qualy rounds. Especially in the longer races it is much more important to be able to handle the traffic.

IIRS Driver Champion (2005-2007, 2010-2014)
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10-02-2018, 10:38 AM
Post: #13
RE: tire temperature
(07-07-2018 09:47 PM)Wolf_pd Wrote:  Well, there are a few things to consider. The Homestead and Fontana tracks are not original tracks. You might have noticed that if there are issues, they usually arise on converted or created tracks.
That means the tire heat lines are usually borrowed from a different track and do not match the specific track conditions. For a road course edit this isn't much of an issue, but for oval and especially high speed ovals it can make a big difference.

I think we ran Homestead 96 in IIRS one time. Not sure about the speeds there anymore.
Fontana is a matter of which layout you are using, because there is a N99 and a N3 around and maybe more.
The last IIRS race was actually at Fontana (the N3 one).
Pole was a 248.346mph. Fastest final lap was 29.830s and the winning time needed for 100 laps was 51h25s3

Before you now think, that pole is so much faster than my 238. The winning driver just did 245mph qualy lap. There are a few guys that are able to run insane qualy rounds. Especially in the longer races it is much more important to be able to handle the traffic.


What about road courses and street circuits? I recently did a 100% lap race at "oval" meadowlands and I can run 38 second laps consistently over a 40 gallon fuel load and my tire meters do not go yellow. I feel like I have experimented heavily with the values in the text file (many lines) and I have not learned how to make the tires loose grip faster- I can only find the obvious modification where THEAT makes the tires get hot faster. (they do get slippery when they get too hot)
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05-01-2019, 03:07 PM
Post: #14
RE: tire temperature
(07-29-2009 08:04 AM)Bazmeister Wrote:  -----------------------------------------------------------------------------
TIRES (Tires - Goodyear)
-----------------------------------------------------------------------------
This keyword has seven parameters. This keyword doesn't appear in
IndyCar Racing tracks. This keyword is used to define the characteristics
of Goodyear tires.

The first parameter defines the grip for the left side tires.

The second parameter describes the heat generated by the left side tires.

The third parameter specifies the tread life of the left side tires.

The fourth parameter defines the grip for the right side tires.

The fifth parameter specifies the heat generated by the right side tires.

The sixth parameter specifies the tread life of the right side tires.

I have no idea what the seventh parameter is for.

Increasing the grip values increases the grip of the tires. Increasing
the heat values increases the heat generated by the tires. Increasing
the the tread life values increases the life of the tires. Increasing
grip increases heat and decreases tread life and decreasing grip decreases
heat and increases tread life.

I disagree with this post. I messed with this value and tested all kinds of numbers. I can't get it to do ANYTHING different.
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06-11-2019, 05:40 AM
Post: #15
RE: tire temperature
Hi,
First of all, I don't know if TIRES and TIRE2 lines are used by the game. But if they are in use then only tread life value is used. Othe parrameters are replaced by THEAT, TCFF, TCFR strings.

TIRES 64881 4300 120000000 64881 3300 120000000 0
TIRE2 65535 3500 120000000 65535 3500 120000000 0


THEAT 11000 8000 5000 15500 9500 7500 5500 15000
THEAT has eight parameters. First four parameters set tire temperature for all compaunds in dry condidtions, next four - tire temperature for wet conditions.
Tire compaunds: soft, medium, hard, rain.

THEAT dry_soft_T dry_med_T dry_hard_T dry_rain_T wet_soft_T wet_med_T wet_hard_T wet_rain_T


TCFF 61535 59535 57535 57535 30800 29989 28989 39000
TCFR 65535 63535 61535 61535 34800 33989 32989 43000

Like with THEAT this string set grip for all tire compaunds in in dry and wet conditions. F - front, R - rear.

TCFF dry_soft_grip dry_med_grip dry_hard_grip dry_rain_grip wet_soft_grip wet_med_grip wet_hard_grip wet_rain_grip

Hope that will help Smiley
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06-11-2019, 05:46 AM (This post was last modified: 06-11-2019 05:47 AM by samsepi0l.)
Post: #16
RE: tire temperature
(06-11-2019 05:40 AM)Pavel 69 Wrote:  Hi,
First of all, I don't know if TIRES and TIRE2 lines are used by the game. But if they are in use then only tread life value is used. Othe parrameters are replaced by THEAT, TCFF, TCFR strings.

TIRES 64881 4300 120000000 64881 3300 120000000 0
TIRE2 65535 3500 120000000 65535 3500 120000000 0


THEAT 11000 8000 5000 15500 9500 7500 5500 15000
THEAT has eight parameters. First four parameters set tire temperature for all compaunds in dry condidtions, next four - tire temperature for wet conditions.
Tire compaunds: soft, medium, hard, rain.

THEAT dry_soft_T dry_med_T dry_hard_T dry_rain_T wet_soft_T wet_med_T wet_hard_T wet_rain_T


TCFF 61535 59535 57535 57535 30800 29989 28989 39000
TCFR 65535 63535 61535 61535 34800 33989 32989 43000

Like with THEAT this string set grip for all tire compaunds in in dry and wet conditions. F - front, R - rear.

TCFF dry_soft_grip dry_med_grip dry_hard_grip dry_rain_grip wet_soft_grip wet_med_grip wet_hard_grip wet_rain_grip

Hope that will help Smiley


Pavel I tried changing that 120000000 in the text file, and then driving in the game. I used many different values low and high. I can't see a difference. I did this for hours. Maybe I am doing something wrong but I like to think I am being detailed with this investigation.

The goal here, would be to be put in a situation where it would be a reasonable decision to use "medium" compounds from time to time during full fuel loads in full length road course and street course races. Right now I always use soft, because they don't degrade enough for me to ever need to use mediums...
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06-11-2019, 05:50 AM (This post was last modified: 06-11-2019 05:52 AM by Pavel 69.)
Post: #17
RE: tire temperature
Have you tried to increase tire temps?

As you see there is no indiviual tread life parameter for every compaund. So I'm doubt you can change them.
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06-11-2019, 05:54 AM
Post: #18
RE: tire temperature
(06-11-2019 05:50 AM)Pavel 69 Wrote:  Have you tried to increase tire temps?

As you see there is no indiviual tread life parameter for every compaund. So I'm doubt you can change them.

Yes, I can get THEAT to make a noticeable difference. If you raise it a lot the tires get very hot and super slippery fast.

I just want to make a situation like in microprose grand prix 2 where the amount of time that the tire has MAXIMUM grip is reduced, and the performance wears off faster on the soft tires compared to medium.

Honestly, I can never tell a difference in ICR2 like I can in GP2.
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