Race Cars and Rear Tire Wear

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Sier_Pinski

Sier_Pinski

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XizangM1
So I, apparently, am currently failing at the 24 Hours of Le Mans.

I have 'tested' the event several times (up to less than an hour each) using different LMPs to find out which one is the best (least boring) for the event. But I have noticed one particular detail that's beginning to annoy me: The rear tires are wearing out much more quickly than the front tires.

I have made several attempts to 'balance out' the tire wear so that it is evenly distributed. I have tried to turn on TCS, increase rear downforce, adjust the brake bias (going so far as to turn off the rear brakes altogether), but I just can't seem to get the rear tires to wear out so preemptively.

Once that happens, my car's front wheels have more grip than the rears, and the vehicle begins to frequently oversteer. By lap 10, the rear tire hitpoint bars are almost completely gone, and not even the might of ASM is enough to get me to the pits stably and quickly enough before that blasted Bentley overtakes me again.

I may need some help regarding evenly distributing rear tire wear. Namely, I may need a better, more understeer-based setup for my LMP's. I'm currently using stock settings, and I'm assuming that the problem can be traced to the aerodynamics, suspension, and LSD. Can anyone help me out at that? Thanks for any help.
 
You can also try to mix front and rear tire, like medium up front and hard at the rear
 
The AI cars are just a lot easier on their cars than you are. Thats why they will pit after you. They don't push their cars nearly as hard as you will

I would try Racing mediums in the front and racing hards in the rear. Set your downforce to default. The brake bias is a good idea, remove all rear brake.

Try exiting corners in a higher gear to avoid spin (MT required) and go to your LSD settings and just crank the torque and acceleration all the way down
 
Actually 10 laps is good longevity compared to your AI opponents.

The Bentley will do 11 laps, but everyone else taps out at 10.
 
There is only so much tuning you can do. There comes a point where the problem isn't a bad tune, but a heavy right foot instead.

Yea, obviously a 700HP car is going to wear the rear tires if you don't show some restraint.
 
Yep, light cars with loads of power are a bit difficult to manage. It really does mostly come down to the right foot and the gearbox. Other things can help somewhat, but nothing will magically solve the problem. You'd be amazed at how much more relaxed you can drive those cars while still going plenty fast enough to compete with the AI. You might even find out that you go faster if you start easing off and just concentrate on keeping the car balanced and the tires quiet.

As for mixing tire compounds, that is probably the most effective single thing you can do... but put the mediums on the rear and the hards on the front. Mediums slide less under duress, spin less under accelerating, and last longer(mostly because of the less sliding and spinning). Oh, and thanks again for that bit of realism, PD.

One other thing that can help is adjusting your brake bias on the fly. As the tires wear, dial it back a bit... and drop the rear brake an extra click when they start getting too uneven.
 
In my experience of endurances, the Hards last just as long as the Softs, I don't know why, but that was my findings over the course of 100 laps of each.

Also doesn't adding more rear downforce, push the car more into the ground, giving better grip, traction, thus more tyre wear at the rear? Try turning it down.

The rear tyres will always wear out before the front, no doubt about that.

Also what car were you using and what tyres?

Ease the throttle, use about 25% of acceleration round the bends, take it to 50% when exiting and then full power when sure that your heading in a straight line and can get the power down.

Also break gently and more early, don't brake fully unless you need to, I find 75% braking or less is enough, I used these techniques to preserve my tyres.
 
aadil717
In my experience of endurances, the Hards last just as long as the Softs, I don't know why, but that was my findings over the course of 100 laps of each.

Also doesn't adding more rear downforce, push the car more into the ground, giving better grip, traction, thus more tyre wear at the rear? Try turning it down.

The rear tyres will always wear out before the front, no doubt about that.
Also what car were you using and what tyres?
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Except for FF cars :dopey:
 
MasterFocus
Except for FF cars :dopey:
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Well this is Le Mans and I hardly think he's going to be driving a Megane Sport or Civic. :dopey:
 
aadil717 has brought it to the point.
Be careful with the right pedal, that's the most important thing when you try to save your tyres. Avoid drifting, so accelerate and brake carefully.

You also could try using soft racing tyres, theres nothing bad about it.
When your car is inferior on the straight, try to catch up in corners with better tyres.

I use the 908 for Le Mans and even though it applies massive torque to the rear tyres, 10 laps are no problem at all. Im running out of fuel before the tyres are getting bad. ;-)
 
I'm using the 787B on racing medium tyres and currently managing 8 laps per stint. I could maybe manage 9 but don't want to risk it. Basically the solution is to get rid of wheelspin entirely. Avoid 2nd gear, avoid wheelpsin coming out of corners, apply the throttle gradually.

Rememeber this is a 24 hour race, there is no need to pull away quickly. What you lose in slower exiting the corner you make up for in the lower tyre wear and less pit stops.
 
Careful if you mix tires, as you can upset the balance of the car, but why not give the engine limiter a go?

Less power means less wear, less wear means longer runs without pitting in(this should also apply to fuel use).
 
aadil717
In my experience of endurances, the Hards last just as long as the Softs, I don't know why, but that was my findings over the course of 100 laps of each.
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LOL WUT?

unless the hards are making you spin out everywhere, the hards should last 2x as long as the softs..

In a stock GT500 car, racing hards are GOOD to go for about 4.5 / 5 laps

Racing softs last about 2 laps tops

proof is in the pudding
 
seanneedscar
LOL WUT?

unless the hards are making you spin out everywhere, the hards should last 2x as long as the softs..

In a stock GT500 car, racing hards are GOOD to go for about 4.5 / 5 laps

Racing softs last about 2 laps tops

proof is in the pudding
Click to expand...


Amuse S2000 GT1 Turbo on NordSchilife

Racing Hards last 5 laps
Racing Mediums last 2.5 laps
Racing Soft last 1 lap
 
It's pretty well known that all three tyres wear at the same rate, unless it's been fixed in spec 2.0?
 
SimonK
It's pretty well known that all three tyres wear at the same rate, unless it's been fixed in spec 2.0?
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I don't think it has been fixed, but I will give it a try. Would be a nice little gift from PD.

Grayfox
Amuse S2000 GT1 Turbo on NordSchilife
Racing Hards last 5 laps
Racing Mediums last 2.5 laps
Racing Soft last 1 lap
Click to expand...

If I would do the same test, the conclusion would be reversed. :dopey:
Hard tyres = less grip = more drifting = increased tyre wear

But when I drive smooth and try to save the tyres, all three types last for the same time. Only difference are worse lap times with medium/hard tyres.

# EDIT
I've read your post again and can't believe you can't do more than 1 lap on Nordschleife with soft racing tyres. That's impossible... you're doing something wrong if that's really true.:crazy:
 
Harder tires don't mean more drifting if you know how to control the car.
 
seanneedscar
LOL WUT?

unless the hards are making you spin out everywhere, the hards should last 2x as long as the softs..

In a stock GT500 car, racing hards are GOOD to go for about 4.5 / 5 laps

Racing softs last about 2 laps tops

proof is in the pudding
Click to expand...

I can assure you that Hards lasted just as long Softs with my racing style. I will do another test with my cars just to prove to you my point.

Also the Hards do not make me spin, and never have.

I don't use any aids (apart from ABS 1) however I'm a very smooth driver with my throttle so that for me eliminates any wheelspin at all.
I get on the power as soon as I'm facing a straight enough angle to let the power unwind smoothly, never accelerate round the bend at maximum acceleration as that will ruin the tyre wear.

Grayfox
Amuse S2000 GT1 Turbo on NordSchilife

Racing Hards last 5 laps
Racing Mediums last 2.5 laps
Racing Soft last [/b]1 lap[/b]
Click to expand...

I will try this car and on this track, see how far I get with Racing Softs. I guarantee it's going to be lasting more than 1 lap, that's just crazy!
 
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As discussed many moons ago and in this thread; in Aspec tyre wear has taken a big backward step since GT4. There is no need for tyre strategy, rain or shine just use Racing Softs. Note: I have checked post 2.0 and there is no change.

@OP pick another car; as stated the Bentley needs fewest fuel stops but the Peugouts, Audis or any Group C car eg Jaguar and Nissans will do.
 
Watevaman
Harder tires don't mean more drifting if you know how to control the car.
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That's right. And that's why I said (at the end of my post) that the only difference between the different tyres are the lap times.
Lap times are worse with hard tyres, and when I push hard the hard tyres are
destroyed quite fast.
But when I drive careful and smooth, all three types of tyres are the same in concerns of tyre wear.
 
Tyre wear is very much down to your driving style. Are you nailing the throttle when coming out of turns? Gently does it.
 
Jaywalker
Why don't you try the Pug 908?
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I tested all my LMP's and Group C's in time trials at this circuit, and the 908 was the slowest car in the list. It certainly wouldn't do well against the less regulated race cars of long ago.

Mopatop
Tyre wear is very much down to your driving style. Are you nailing the throttle when coming out of turns? Gently does it.
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Yes I am doing the throttle gently. But apparently not enough. I may have to give the throttle management thing more practice. This is coming from someone who has golded all 60 license tests and silvered the 3 X2010 challenges.
 
Chemenu
aadil717 has brought it to the point.
Be careful with the right pedal, that's the most important thing when you try to save your tyres. Avoid drifting, so accelerate and brake carefully.

You also could try using soft racing tyres, theres nothing bad about it.
When your car is inferior on the straight, try to catch up in corners with better tyres.

I use the 908 for Le Mans and even though it applies massive torque to the rear tyres, 10 laps are no problem at all. Im running out of fuel before the tyres are getting bad. ;-)
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I'm doing Le Mans 24 hours with the Pug (9 hours in, 6 laps ahead), and my tires always need changing on lap 10, but how do you run out of fuel before tires? My car is completely stock parts wise, and always have 15 liters of fuel left.
 
Sier_Pinski
I tested all my LMP's and Group C's in time trials at this circuit, and the 908 was the slowest car in the list. It certainly wouldn't do well against the less regulated race cars of long ago.



Yes I am doing the throttle gently. But apparently not enough. I may have to give the throttle management thing more practice. This is coming from someone who has golded all 60 license tests and silvered the 3 X2010 challenges.
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The Pug 908 can actually really hold its own against the AI.

I'm demolishing my opponents right now. The Audi R8 and the Pesky Hybrid beat me on the straights by only a little.

But the Pug's torque and handling beats them at the corners.
 
i just did a stint in my 458 italia, 650hp around nur 24hr for the 4hour endu race. Racing mediums i got 6laps while keeping tabs on my tires. Racing soft i get around 3 laps, 2 if im really pushing hard. Is this standard?
 
Grayfox
Amuse S2000 GT1 Turbo on NordSchilife

Racing Hards last 5 laps
Racing Mediums last 2.5 laps
Racing Soft last 1 lap
Click to expand...

they changed it now? if yes i would be really happy because i have done the lemans 24h without the 2.0 there was racing soft allways the longest stint 8-9 laps and the hards 7 laps wich is totally wrong
 
MTLclllutch
i just did a stint in my 458 italia, 650hp around nur 24hr for the 4hour endu race. Racing mediums i got 6laps while keeping tabs on my tires. Racing soft i get around 3 laps, 2 if im really pushing hard. Is this standard?
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The Nuer 4hr uses the V track, not the 34hr.
 
This is all weird, my Pug is getting 10 laps on all three main tire compounds.
 
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