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tyre pressures on a vr running 215/40/17

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can anyone help me out on some good pressures to run :?:

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Since they're non-standard size, you run them hard enough that the steering feels nice and precise, and no softer. There's not really any mathematically-deduced guidelines.

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Theres no point asking what people recomend, there are so many things that could have changed when they checked the pressure. Most will have checked at a garage with inaccurate readers and after driving it.

 

Start with whats recomended for the car and see how it feels, the pressure for the car is worked out on load/weight of the car, change it if you think it needs changing or if you notice uneven wear. The pressure in the tyre will change depending on how hot the day is anyway. For instance yesterday was really hot but the day before was cold so the pressure in the tyres would be different, generally I've found tyres tend to run 10° hotter than the ambient temperature so the hotter the day the higher the pressure will be.

 

And dont forget tyres are ALWAYS checked cold which doesn't include a short drive to the garage.

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