![]() A good practice is to run lower initial tire pressures on a hot track, with the tire eventually warming up to reach its optimum pressure and contact patch after a couple of laps. ![]() ![]() ![]() Track temperature, of course, makes a massive difference in tire temperature too. If you are steering with too much intensity and at too large of an angle, your tires will scrub across the track surface unnecessarily, increasing your pressures as a result. What you will realise is that tire pressures and temperatures are directly intertwined – the greater your tire temperature, the greater your tire pressure.Ĭhanging your driving style to be less aggressive with steering inputs can also help manage tire temperatures with the added benefit of reducing tire wear as well. Key factors affecting tire pressuresĪdjusting the camber angles – the angle between the vertical axis of the tire and the vertical axis of the car – is vital when working on your tire pressures in iRacing, as it can help even out the temperatures if you’re seeing higher readings on the inside of the tire when compared to the outside. iRacing can display pressures and temperatures in either Metric or Imperial though, but whatever your preference, the principle remains the same. Lower temperatures in the middle are usually a sign of too low tire pressure and the opposite if it’s higher. Your aim when working on tire pressures is to get the middle temperature to be more or less the same as the inner and outer measurement points. For example, if you’re driving a GT3 car, you’ll get 12 temperature measurements: the front-left tire will show O for Outer, M for Middle, and I for Inner, with individual temperatures per section. Temperatures are displayed in PSI on three spots per tire. A common way to get your tire pressures correct in iRacing is to drive a few laps using the default setup and pressures, enter the pits and check the temperatures. How does iRacing display tire pressures?įor most cars, iRacing doesn’t give you real-time tire information while driving, so you need to pit to get this data. However, this can be quite difficult and time-consuming to achieve and can be influenced by many factors. The trick is to find the perfect pressure to maximise the contact patch and give you the highest possible grip level. Lowering the pressure below optimum has a similar result, with the centre of the tire caving inwards, resulting in the tire mainly touching the track with its outer edges and increasing friction, having adverse effects on temperature and wear. This, of course, reduces the contact patch’s size and your grip level on track. Inflating it too much and the tire surface moves from being flat, edge to edge, to more rounded in the centre. Inflating a tire will cause it to expand until it reaches a point where it touches more or less the perfect pressure in terms of the size of the contact patch that’s presented to the track. The tire contact patch and pressure relationship Some cars that are low downforce, like the majority of touring cars, are so reliant on this tire-to-track contact that even minor setup changes can result in a huge difference in performance. This fact is carried across all of the cars in iRacing, regardless of whether you’re driving the latest F1 car or a Formula Vee. The only part of your car that touches the track is the tires.
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