Tyre screeching

[woodyracing]

when I've driven a saloon car on a twisty track I've noticed that i hardly get any tyre screeching, yet some other people in the same car on the same track get lots. I didn't know their lap times to compare.

So am i not pushing enough or are they pushing too much ? or am i just smoother ?

[Al Weyman]

Same tyres (and amount of tread) Woody? I have noticed tyre pattens and types make a differnce.

[Adam43]

Same car and same track. Were they the same tyres? I've noticed differences in tyres. For instance I've always found Pirellis (P6000) screech more than most. I always found it quite reassuring!

When on stickier stuff I find that there is less screeching, even when the limit has gone! I guess this is to be expected.

More generally it doesn't always mean you are going quicker, the only way to tell are the lap times.

[woodyracing]

yes it was the same road tyres.

[Al Weyman]

Same car, both sets buffed? An unbuffed set will squeal like a banshee usually, especially if a list 1A. I would imagine tracking alterations would also make a differnce as one car will have more tyre slip angle than the other unless all things were set equal, also roll will make a difference.

[woodyracing]

everything was the same, just 15 to 30 minutes apart - it was a race school car, which is why i think its something to do with the driving style.

[midgetman]

Too much steering lock, front wheels shrieking in complaint at nearly-terminal understeer I suspect. Smoother driver doesn't punish them so much, probably ends up quyicker too.

[Al Weyman]

Especially towards the end of the race when the screecher will have cooked them for sure!

[Simon Fox]

'sall about slip angles

[Adam43]

As mentioned, if you find the screechy point then back off what is causing it a little - you could find that faster.

[woodyracing]

ok thanks for the replies

[Simon Mason]

It is impossible to drive a treaded tyre car quickly (I'm mean as quick as it will let you go) without screaching the tyres. Thats what happens when you get blocks of rubber twisting and it can't be helped. Hell, even slicks sqeal slightly although mostly heard inside the car.

What you should be aware of is not how they squeal but when. If they squeal all the way to the exit, its bad, if they don't squeal at all the chances are you have more speed to come, if however they "start" to squeal going into the apex then start going quieter from the apex with no noise at all just after the apex chances you got it pretty much right.

[Notso Swift]

Originally Posted by Simon Mason

It is impossible to drive a treaded tyre car quickly (I'm mean as quick as it will let you go) without screaching the tyres. Thats what happens when you get blocks of rubber twisting and it can't be helped. Hell, even slicks sqeal slightly although mostly heard inside the car.

What you should be aware of is not how they squeal but when. If they squeal all the way to the exit, its bad, if they don't squeal at all the chances are you have more speed to come, if however they "start" to squeal going into the apex then start going quieter from the apex with no noise at all just after the apex chances you got it pretty much right.

I know exactly what you are talking about - I like to describe it as the tyre "humming" rather than screaching. Smoothness is everything , if it is not smooth the sound is very "sharp" and you will just cook the outside of the tyre. It is about the feel of the weight transfer.

Clumbsy drivers will often resort to more camber than someone who is more balanced, however, this effects brakes and traction.