They bring the car to the apex and begin to get back on the throttle.Following is the order of what usually happens in this case: ‘Lift-off oversteer’ spins and crashes are the most common incidents I see on track days and with amateur racers. To ensure your turn-in is smooth, it’s important that your vision is good, which will ensure you know where you want to place your car long before you arrive there and that your racing line will be perfect. This applies to all aspects of circuit driving, including turn-in. If you’ve read all of our articles you should know by now that being smooth is key in being fast. Violent inputs cause violent slides, which are more difficult to catch. If the car has more front grip and a driver turns in sharply, the car will oversteer and it won’t be predictable or smooth. Having said that, turning into a corner violently is never good technique and if you do this, you’ll be losing lap time. Much like entering the corner too fast, turning in too violently can create understeer or oversteer – which end slides first will depend on the car’s balance and setup. The diagram below shows two separate laps for a driver where they have changed their technique – bled off the brake sooner in the image on the right – and so moved more grip to the rear of the car. Sometimes it’s difficult to understand whether a driver is entering the corner with too much ambition (speed) or if they are holding the brakes on for too long and leaving the rear of the car with too little grip.Īs described in the trail-braking article here, reducing brake pressure as a driver turns into a corner will transfer more grip to the rear of the car and can allow a faster entry. If the driver turns in with the grip distribution like this, the front will turn in very well, but we will be rear grip limited and the car will likely oversteer. This leaves the grip distribution of the car unbalanced and the front with the majority. When a driver brakes the front suspension compresses, transferring weight – and grip – to the front of the car and away front the rear. I spoke about this in the weight transfer video tutorial but I’ll go over it briefly here again. As always, it’s important to be conscious of what is happening with your car, so to use the time on track as efficiently as possible. However, to prevent the oversteer from happening is the first place it’s likely that you’ll have to reduce the entry speed on the following lap. Depending on the setup of the car, and the drivers technique, the rear of the car can lose traction before the front and cause oversteer.Īs with all types of oversteer, you must apply opposite lock to try and correct the over-rotation. Ask the car to go through a corner above this speed and it will break traction. There is a limit to how fast a car can travel through a certain radius. Accelerating too hard out of the corner (in a RWD).Entering a corner while braking too much.There are a few things that can cause oversteer in a track car and they can mostly be controlled by how a driver is driving. What are the causes of oversteer and how to correct them This is because of my experience, but the truth is it can be learnt – pretty quickly – if a driver continually drives their car on the edge of grip and has a lot of these small oversteer moments. When I sit next to an amateur for coaching, a lot of the time I know when the car is about to slide a second or so before the driver. With time and more oversteer moments, a driver will begin to predict when oversteer is about to happen – rather than reacting to it. With beginners, the reaction can be a little late and the input a too much, but this is to be expected. When a car oversteers, most people have a natural reaction to add opposite lock. If the correct amount of opposite lock is applied, the car will continue to oversteer a little through and out of the corner, which is what we’re after. When this movement happens, the driver will need to react quite quickly, as if there’s no opposite lock input, the car will likely spin. A driver will sense the movement – the rotation of the car – in their bum and through their body. When oversteer happens and the rear tyres break traction, it’s quite easy to feel. As you can see, the driver has started to oversteer before the apex and failed to correct the slide, before spinning to the inside of the circuit. The diagram below shows a car’s racing line when it’s oversteering on a circuit. The causes of oversteer and how to correct.In this video whiteboard our professional driver, Scott Mansell, will examine: Welcome to tutorial eight in our Driver’s University series.
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