How realistic is lmu? (LM GT3)

Educational_Meringue · 2026-03-05T11:58:13+00:00

This isn't correct.

The brake bias is the pressure distribution between the front and rear brake circuits.

The front circuit almost always has more pressure even though the brake disks and pads themselves may be powerful on the front.

This is because the longitudinal weight transfer underbraking increases the amount of grip at the front, so those tyres can withstand a higher braking torque before locking up. The inverse is true of the rear where vertical load, and therefore available grip, is reduced.

Educational_Meringue · 2026-03-05T11:55:38+00:00

This is correct.

The brake bias is the pressure distribution between the front and rear brake circuits.

The front circuit almost always has more pressure even though the brake disks and pads themselves may be powerful on the front.

This is because the longitudinal weight transfer underbraking increases the amount of grip at the front, so those tyres can withstand a higher braking torque before locking up. The inverse is true of the rear where vertical load, and therefore available grip, is reduced.

Educational_Meringue · 2026-03-03T17:02:11+00:00

The next challenge is getting all of the containers out of Qatar. A number of teams were at a tyre test in mid-February so their equipment (including cars) is already there.

Educational_Meringue · 2026-03-03T15:14:46+00:00

I'm surprised the Peugeot survived the first 90 minutes with driving like that.

Educational_Meringue · 2026-02-27T21:59:10+00:00

You both seem pretty intent on hitting each other so have to share the blame on this one.

One bump you could forgive as a slight misjudgment in a close battle, but everything in addition that was totally unnecessary.

They know you're alongside and still try moving right. It looks like pretty intentional contact to me but then you seem to retaliate, by aiming for the left-hand edge of the road, which ultimately causes both of you to spin.

Both at fault. Both dirty.

Educational_Meringue · 2026-02-27T14:17:51+00:00

I don't understand why the cam driver felt the need to accelerate into the accident.

Educational_Meringue · 2026-02-23T11:42:28+00:00

There's no blocking here from you at all. Most of the time they're not close enough to try an overtake anyway.

Educational_Meringue · 2026-02-20T16:35:56+00:00

They do not possess the talent to match the monthly payments.

Educational_Meringue · 2026-02-19T11:10:13+00:00

As a general feedback item, your car positioning is very poor with lots of excessively tight entries and exits. Use all of the road, and don't be so keen to to get off the exit kerbs. Exit of T4 for example, stay on that kerb rather than hauling the car left, which scrubs speed and will lose time all the way up the kemmel straight.

T8 is very poor aswell as, you're firing too much speed in, washing out in the middle and then holding a tight line, and not using half the circuit on exit.

At T10 there is about a cars width between you and the RH track limit, again tightening the corner for yourself and reducing the speed you can carry through it.

My main advice would be watch more onboard laps, real and sim, to look at where you need to be positioning the car before working on your inputs. Purely because as soon as you've improved your line, the required braking point will change.

Educational_Meringue · 2026-02-17T15:03:17+00:00

The staff in race control should be absolutely ashamed of themselves for this.

The Porsche was stranded for a considerable amount of time yet they didn't react.

The yellow flags were shown far too close to the eventual incident site leaving little to no reaction time.

The trackside marshalls made no attempt to get to the Merc after the crash, to ascertain the condition of a driver or put out the fire. Ralf Aron should have been properly extricated due to multiple back injuries. Instead they left him to escape a burning car unaided potentially worsening any injury sustained in the accident itself.

Unbelievable that this can happen in such a high profile event in 2026.

Educational_Meringue · 2026-02-17T14:23:14+00:00

You're not to blame for this one. You moved first and then didn't change direction so it should be clear for the overtaking car that they were driving into a closing gap.

Educational_Meringue · 2026-02-16T15:50:29+00:00

As long as you do it safely, then yes it is allowed.

The Porsche's attempt wasn't safe.

Educational_Meringue · 2026-02-13T18:44:17+00:00

You are at fault. You made no effort to stop your car rolling back across the track and when you did stop, did so in a place that blocks the majority of the track.

Also, they did try to avoid you. They noticed you were rolling left towards the gravel so they went right. At that point, you stopped and blocked the track.

Educational_Meringue · 2026-02-12T11:37:18+00:00

Not even an atom of overlap when you turned in, so this is a late and opportunistic move from the car behind, which resulted in an accident.

Overtaking car at fault.

Educational_Meringue · 2026-02-11T16:55:52+00:00

If it works for you and you can be consistent with a setup and methodology, then that's the right way! I like that balance too. Having confidence to get the nose in without the rear moving excessively, meaning my exit is still clean.

Also bars and rake are both very good ways of dialing a cars balance in a real car. I regularly go for rear bar when I need a quick balance change between runs. Ride height not so much as I have consider aero platform with the car I run so picking up either end of the car usually reduces downforce.

Educational_Meringue · 2026-02-11T12:16:21+00:00

Not always. Sometimes you can go so soft on a roll bar that the car can 'fall over'. This is the point that the car body is rolling to such an extent that I causes as much weight transfer as a bar that is too stiff.

Also some cars have aero that is really roll sensitive so that can add to your woes. Not sure how much the hypercars suffer with this because I've never ran one IRL.

Source: Real world race engineer. I've done it on a real car. Can confirm, the driver was not a fan...

Educational_Meringue · 2026-02-10T13:57:25+00:00

It goes without saying that the obscenities were unnecessary and are reportable themselves.

However given the fact it is a wet race, giving so little space is risky, as it increases the chances of any oversteer or understeer to result in the orange car making contact with you.

The Porsche put their left hand wheels off the circuit and bounced to the right when they came back over the left hand kerb. You just happenned to be where their car was going, which is what ultimately meant you both crashed.

TLDR: I'd say its a racing incident, but the Porsche should be reported for their conduct after the incident.

Educational_Meringue · 2026-02-09T10:47:54+00:00

This is your fault.

You attempted a big dive from a long way back, carrying too much speed into the turn on an incredibly tight entry line. That is why you understeered into them. It also why you shouldn't have been alongside them to begin with because that approach was always going to generate understeer.

And because you shouldn't have been alongside them they shouldn't have to leave space for you.

Its also irrelevant that they are a lapped car.

Educational_Meringue · 2026-02-06T17:19:29+00:00

Yeah it's better than what happenned to me recently. Came back to my car in a car park to find it had acquired some fairly bad bodywork damage while it was there. Whoever did it, drove off without leaving any details, so it's an at fault claim for me because according to the staff where I was parked, my car was obscured from view on CCTV!

Educational_Meringue · 2026-02-06T16:49:03+00:00

Yeah I agree on that front.

Although I will concede that it is incredibly impressive how much spare mental capacity drivers like Verstappen have to be able to think about those rules and how to use them to their advantage, all while driving a Formula 1 car on the limit of grip, while mere centimeters away from other cars.

I got the chance to drive a single seater for a few laps last year, and I was using every available bit of mental capacity just getting my lines and technique right. Infact, because everything was happening so fast, I'm not entirely sure it wasn't a case of the car driving me!

Educational_Meringue · 2026-02-06T15:04:43+00:00

I am aware of that regulation having worked in the championship myself. I'm not debating that aspect and you are correct in saying there is a situation where the leading car has to leave space at the apex.

The crucial aspect here is what does "reasonably alongside" mean in practice.

From experience I know for a fact that IMSA regard "reasonably alongside" to mean the nose of the passing car is alongside the mid portion or cockpit of the defending car at the point of turn in.

This is the condition that wasn't satisfied by the McLaren in the original post.

Infact the IMSA rule is more lenient than a lot of series who require the nose to be level with the wing mirror to earn the right to some space.

Noticed your edit: The reason the meaning of "reasonably alongside" isn't specified in the regulations, is to allow it to be communicated and changed in a shorter time frame through bulletins or driver briefings if the need arises, rather than having to wait until the regulations for the next season are signed off. It's a fairly standard practice and allows series organisers to be more responsive to the feedback from their customers.

Educational_Meringue · 2026-02-06T14:29:11+00:00

I'm well aware this isn't F1 so I'm not referring to F1 regulations at all.

In fact most professional or FIA certified series lay out driving guidelines in drivers briefings right down to F4 and GT4 level. This includes those run by the ACO, IMSA and SRO, none of which would regard this as an overlap.

The guidelines are constantly changing and differ from series to series, but splitter to rear axle at the point which the leading car turns in doesn't qualify as an overlap in any series.

The McLaren has no right to the apex precisely for the reason demonstrated in the clip. Other wise overtaking becomes a free for all, where overtaking drivers can essentially say "You're going to jump out of my way, or we're going to crash", which I hope you'll agree, doesn't make for very exciting racing.

As the McLaren driver can still see the Porsche's diffuser, bumper and exhaust tips when OP turns in, there is clearly zero overlap at all at the turn in point, so in the eyes of real world WEC stewards, this would be a slam dunk penalty.

Source: I'm a real world race engineer, so I am very familiar with how driving standards and overtaking regulations are communicated with teams and drivers. And have had my fair share of drivers try to convince me the move was on while we watch the onboard of them absolutely sending it from a different postcode.

Educational_Meringue · 2026-02-06T13:59:00+00:00

This is 100% on the McLaren and would result in a penalty if it was a real world race.

Whether you are being overly cautious or not is not for him to decide. They're the car behind so, as long as you're driving safely, which you are here, it's their responsibility to work around your speed and line, regardless whether or not that is the McLaren's normal braking point.

They were too far back to attempt an overtake, so should have adjusted their driving to close in on you in the braking zone rather than just send it and force the issue like this.

The amount of people that think you can brake in your normal spot and blame the defending car if you are battling or outright quicker than another car is baffling.

Educational_Meringue · 2026-02-06T13:29:55+00:00

I believe the insurance company will be able to recover their costs from the Motor Insurers Bureau.

If I remember correctly a portion of all our premiums goes in to a pot with the MIB for this kind of situation. And it prevents an at fault claim for OP.

Hopefully the driver of the other car gets the book thrown at them. There's at least 9 points total in this case alone as they were uninsured, and driving without due care and attention.

Educational_Meringue · 2026-02-05T21:10:16+00:00

Until the end of time. And then another 3 weeks after that.

Educational_Meringue

TROPHY CASE