Indy 500 & Tire Wear

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tomisnic

tomisnic

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tomisnic
I first did the Indy 500 race more than a year ago. At the time I used the Minolta car with soft racing tires and won comfortably (by 2 or 3 laps I think).

I've decided to revisit the race and make it more competitive by using a more appropriate car (currently using the the Audi R10 TDI Race Car '06) and use using the same tires (racing mediums) as the AI.

For some reason I can't seem to get nearly as much out of my tires as the AI drives get. I have to pit after 18 or 19 laps while the AI drives have barely used half of their threads (I've quit the race and checked on them).

I have no idea why this difference is so huge. I'm not pushing the car much harder than the AI because I usually have 3 or 4 cars breathing down my neck..I'm driving as fast as the fastest AI cars but getting considerably less out of my tires.

Any suggestions? Has anyone tried the Indy 500 since the update (and I don't mean in a X1 or formula car)?
 
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I'm not the guy to answer your question, but I do know it would help to have a little more info regarding the tire wear. More specifically, which tires are wearing the most, and how the car is handling in general.
 
Check the threads about tire wear. The tire wear has been tweaked since the last patch. I bet it has something to do with that.
 
parabulla
I'm not the guy to answer your question, but I do know it would help to have a little more info regarding the tire wear. More specifically, which tires are wearing the most, and how the car is handling in general.
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My front tires go out first and the car handles well until my tires are gone.
 
Snowmanimal
Check the threads about tire wear. The tire wear has been tweaked since the last patch. I bet it has something to do with that.
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I don't know...like I said, it's just my tires...the AI is fine. And a few days ago I did the Suzuka 1000 and I was getting very similar tire wear to the Ai drives. It seems to be just an issue at Indy.
 
tomisnic
My front tires go out first and the car handles well until my tires are gone.
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Check your brake balance and weight balance. If you are breaking hard into the corners, are your tires turning red?


Edit: Try racing hard up front and mediums in the back.
 
Snowmanimal
Check your brake balance and weight balance. If you are breaking hard into the corners, are your tires turning red?

Also, what tires do you have on the car?

Try racing mediums up front and hards in the back.
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My tires don't turn red at all at any point and there is no hard braking involved at Indy. When I'm in the lead, I just lift my foot off the gas while cornering and when I pick up a little more speed from drafting, I just gently tap the brakes for a fraction of a second.

I use racing mediums (like the AI) all around.
 
I had to edit my last post because I remembered you posted your tires. I am now wondering if it is camber or some other suspension setting.
 
Snowmanimal
I had to edit my last post because I remembered you posted your tires. I am now wondering if it is camber or some other suspension setting.
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This is the setup I'm using (I modified the gears a bit to get a higher top speed)

audir10rc.jpg
 
The R10 is very rough on the tires for some reason. Most other LMPs will go significantly longer per pit stop. I get 24 laps out of a set of Race Hard in the R10, but an R8 limited down to the same HP will go 34.
 
I was reading about the rough tire wear as well.

Maybe decrease toe angle and increase accel sensitivity. Since it is about making a lot of left turns at Indy, one would want to set the angle of the tires to help make turning left easier.
 
yanaran
The R10 is very rough on the tires for some reason. Most other LMPs will go significantly longer per pit stop. I get 24 laps out of a set of Race Hard in the R10, but an R8 limited down to the same HP will go 34.
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I have the same problem with one of the Pescarolo's...the hybrid I think.
 
Try running less camber by ~1.0 front and rear.
 
I would say the toe is your biggest issue, which would then mean camber is next. Let the downforce handle the corners. Tune the suspension for the straights. Your suspension will then disagree with the pavement for lesser durations.
 
Try a few practice laps and switch the tire load indicator on. I did this recently on Indy speedway with an LMP. Was surprised how much the "!" symbol would light up. Which I figure means that the car is bottomed out ( sitting on the suspension blocks ). This was happening at the rears just from the car reaching high speed by the end of the straights, it was like the aero downforce being at max was pushing the car down harder. Then in the corners again the car could light all 4 up.

I ended up raising the car ride height from -10s to +10s. That seemed to remove most of the bottoming out.

I did the race using RH tires and could run the fastest laps of the field and comfortably get 25 laps out of a set of tires. I could have got a few more laps out of the tires, but 25 lap tire & fuel cycles made the maths easy.
 
Mic_Col
I ended up raising the car ride height from -10s to +10s. That seemed to remove most of the bottoming out.

I did the race using RH tires and could run the fastest laps of the field and comfortably get 25 laps out of a set of tires. I could have got a few more laps out of the tires, but 25 lap tire & fuel cycles made the maths easy.
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Good to hear. See if you can lower the height anymore. Find a sweet spot. Upping it 20 ticks is a drastic approach. I say drop it 5 more, see how it handles/tire wears. If worse, rise it up a tick. Same, keep it. Better, try to down it another tick. Rinse and repeat.
 
Why do you guys need to run more than 20 laps per stint in this event?

I did the the Indy 500 recently , pitted every 20 laps and won by 2 laps in the end vs 2 r8 ´01´s.

I used a R8 ´01 on RH´s


raVer
 
Too much low end power? :\ your car has unnecessary torque
 
Corpsey
Too much low end power? :\ your car has unnecessary torque
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:lol:

The R8 has less torque than the R10 and the HDI FAP :p

Mine has 778 bhp , 950 kg , 700 PP and 93 kgfm torque.

The R10 and the HDI FAP have more than 100 kgfm torque.



raVer
 
@tomisnic


Forgive me since I'm fairly new to here, but how did you post that nice graph showing your settings? Is there a site you can enter them in at? Or better yet one that can track your account and show them?
 
GTPorsche
Try running less camber by ~1.0 front and rear.
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+1 Also:

This may sound stupid(please don't take offense)... but slow down? I assume you're not losing this race when you're on the track. If you're beating them by a second or more a lap, you're using your tires more than them in the corners. I can go mostly flat out through the corners, but they'll slow down by 10-20MPH. If this is simply tire preservation... don't run 100%, or even less than you have been running.
 
Thank you for the input everyone. After tinkering with the track pretty much all day, I've come to the conclusion that my driving style was to blame for excessive tire wear. Basically, I was not slowing down sufficiently while cornering and even though the tire indicators never turned red, I was still putting more stress on my tires than the AI drivers were putting on theirs. During the straights, they would just draft me and each other and my cornering advantage was soon gone.

I'm now slowing down more and my tire wear matches that of the AI drivers.
 
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Jubby
+1 Also:

This may sound stupid(please don't take offense)... but slow down? I assume you're not losing this race when you're on the track. If you're beating them by a second or more a lap, you're using your tires more than them in the corners. I can go mostly flat out through the corners, but they'll slow down by 10-20MPH. If this is simply tire preservation... don't run 100%, or even less than you have been running.
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That's no stupid at all...that's exactly the conclusion I came to as well.
 
tomisnic
I have the same problem with one of the Pescarolo's...the hybrid I think.
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The Hybride is also brutal on the tires. You can see this in most races as the AI C60 will always pit before his competitors. Most other LMPs, like the Speed8, the two R8s, 908, GT-One and a few more will go much longer between pit stops.

It's good that you've found a way to tackle the race that you enjoy, but I think it should be pointed out that you don't need to slow down at all in the corners. My 24 and 34 lap examples are full throttle all the way from start to finish, and I lap the field around #20.

Max ride height front/rear and a bit of negative toe (-0.2 or more) are the two most important settings for going faster and further at Indy.
 
yanaran
The Hybride is also brutal on the tires. You can see this in most races as the AI C60 will always pit before his competitors. Most other LMPs, like the Speed8, the two R8s, 908, GT-One and a few more will go much longer between pit stops.

It's good that you've found a way to tackle the race that you enjoy, but I think it should be pointed out that you don't need to slow down at all in the corners. My 24 and 34 lap examples are full throttle all the way from start to finish, and I lap the field around #20.

Max ride height front/rear and a bit of negative toe (-0.2 or more) are the two most important settings for going faster and further at Indy.
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I'm planning on using all the open cockpit cars eventually.
 
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