QuestionQUESTION: I got a question regarding braking with worn tyres. I heard that if your tyres are worn then braking is not as effective. how so?
ANSWER: well... as far as i know this works the other way round
worn tires will perform better on dry surface as their is too little tread left to let the tire wobble or wander around in corners or under braking... you are practically getting closer and closer to a slick tire.
on the wet it is a totally different story as the worn tire will lose grip very easily and aquaplane all over the road and you will lose control
MMamdouh
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QUESTION: So what about the difference in braking if you have soft "tires" compared to hard tires. Well to make more sense lets say that you have 2 cars with fresh tires, or maybe warmed up tires because fresh tires are not the best. And one car has Soft tires and the other one has hard. if both the cars brake at the same time does one brake better than the other? And which car has less capabilities of having there brakes locked up? You know your stuff man.
ANSWER: with all things being even a softer tire will grip better than a hard one but in real life it is not that simple
as far as i know the tire compound is related to road conditions meaning that on wet surfaces you have to go with a softer compound than usual due to the lack of grip the wet surface is going to give you
also softer compounds will grip better on the dry as well so this might sound like "softer is better all the way" but it isn't... softer tires will wear faster than harder ones so if you are going on a long stage, very hot tarmac or abrasive surface you will benefit from soft compound tire indeed but not for so long.
as far as i can see; it is a compromise between grip/survival of tire so you go with the softest compound that can survive the whole stage you are doing so here the surface condition is a factor as well as the length of the stage and ambient temp. and so on
this sounds complicated and it is complicated indeed... even the top end rally drivers sometimes mess their tire choices and lose valuable positions due to that... it takes a ton of experience to choose the right tires almost every time.
MMamdouh
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QUESTION: last question. Why is it necessary to lessen the psi of the tire and skinnier tread
Answerwho said it is "necessary"?
as i explained before this is all related to road conditions as you got lots of variety of tire compounds, treads, width, etc...
less psi in tires will result in wider contact area with the road surface... not a good thing on the dry as you will have more drag but it is good on muddy surface as it gives you better grip
same goes for tire width... wider tire will have better grip on the dry but on ice it will make you skid all day long so it is better to have skinner tires to dig into the snow and have more grip
tire choice is always a function of your road surface and condition... you can use the widest tread and softest compound but it won't do you any good anywhere other than on dry, smooth tarmac
same goes for skinny, studded tires... won't work unless you are on ice
MMamdouh
