Rear-wheel grip

[AudiPro]

I've noticed on a couple cars (Audi LeMans Quattro, BMW McLaren F1)that for some reason while braking through turns the rear tires lose grip and then you just end up in the wall. Is there any way to solve this issue.

 

[Flynn77]

Don't brake through the turns?

 

[aadil717]

Don't brake through the turns?

Lol ^ 👍

Yes, you should always brake before the corner and therefore have a decent entry speed rather than going to fast and having to adjust to the corner.

 

[Smallhorses]

Yes, you should always brake before the corner and therefore have a decent entry speed rather than going to fast and having to adjust to the corner.

^ This.
You need to practice the Slow in, Fast out mantra of all racing drivers.
In a high-powered MR car which is prone to spinning it's rear tyres anyway, braking mid-turn is just going to throw the heaviest part of the car i.e. the engine behind you, around.
Many MR & RR cars are especially prone to lift-off oversteer, which happens when you lift off the throttle mid-turn (usually heading for the brake pedal!) since if you're driving at the limit and have the throttle full on, the weight of the car has shifted towards the back, loading up the rear tyres, but if you suddenly release the throttle, the weight of the car shifts forwards and unloads the rear tyres, and you lose rear grip.
This does also happen on occasion in some FR & even FF cars, the Peugeot 307 in particular!

Learn your racing techniques in a slower car before progressing to a full-on racing monster. Remember what Sir Jackie Stewart always preaches: "...you shouldn't be on the gas in a corner until you're certain you won't have to come off it again." 👍

Watch this video, it's all good, but skip to 3:30 if you want to hear it straight from the horse's mouth.
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[Ignignoc N Err]

Everything that Smallhorses said, +1.

Also, to possibly shed further light on the "slow in, fast out" mantra, exit speed is key. Read it again: EXIT speed is key. If you go into the corner too fast, you are doomed to spend too much of the corner braking, sliding and losing speed. If you go into the corner more stable, controlled, and slightly slower, you'll be able to point your car exactly where you want it to go, get ankle deep in the throttle, and have more time WOT than your competition.

You should be able to go WOT at or just slightly after apex if your entry angles are all kosher. If your entry was too fast, you'll go sliding past apex and wind up having to spend more time on the brakes and steering to recover before you can get into the throttle. Remember, every time you hear a wheel screeching, it is losing traction. Since you cannot exceed the 100% traction threshold for your tires and your tires are suffering from lateral grip loss, then it only stands to reason that they are suffering from forward acceleration grip loss as well.

 

[Parnelli Bone]

I've noticed on a couple cars (Audi LeMans Quattro, BMW McLaren F1)that for some reason while braking through turns the rear tires lose grip and then you just end up in the wall. Is there any way to solve this issue.

And what tires are you actually using? I'm guessing racing tires since you didn't mention any understeer at all.

One trick you can try is adding more front camber, so the front-end doesn't grip in so strongly. You can also add toe to the front and/or rear, but I'm not so experienced with how this works. I always ask Leonidae whenever I need some toe advice, lol.