Technical queries on tires

[atenza63]

Greetings all, i have a few doubts pertaining tires and i've listed the questions below.
I appreciate to aquire all relevant help and advices which i will be applying to both simracing and real racing.

1. What does a peak temp of a tire represents? Is it the highest temp a tire can get or is it the point the tire has the most traction? Is it related to overheating point?

2. As a tire wear down, it starts to releases some of the heat and start to go down in temperature. In what way does this cool off effect have an impact on performance?

3. A tire with a higher pressure has better handling but sacrifices traction. Handling here refers to how quickly it reacts to driver's input. Am i right to say that?

4. Besides pressure & temperature, do tire profile(sidewall) contributes to the car's cornering performance and how are they affected?

[RidingOnRailz]

Originally Posted by atenza63

Greetings all, i have a few doubts pertaining tires and i've listed the questions below.
I appreciate to aquire all relevant help and advices which i will be applying to both simracing and real racing.

1. What does a peak temp of a tire represents? Is it the highest temp a tire can get or is it the point the tire has the most traction? Is it related to overheating point?

2. As a tire wear down, it starts to releases some of the heat and start to go down in temperature. In what way does this cool off effect have an impact on performance?

3. A tire with a higher pressure has better handling but sacrifices traction. Handling here refers to how quickly it reacts to driver's input. Am i right to say that?

4. Besides pressure & temperature, do tire profile(sidewall) contributes to the car's cornering performance and how are they affected?

Wow. Here I am, analyzing the affects of Caster vs SAI over in my thread by that name, and your relatively simple question here has gone unanswered since last week! Strange.

I can give #3 and #4 a shot, the others I'll leave up to other posters.

#3. First sentence is mostly correct. Handling is part reaction to driver input and partly reaction to the surface on which the vehicle is driven. How immune a car is to being pulled toward the side whose wheels have traversed a pothole(bump steer) is a part of handling as well.

#4. Enormously! Lower profile sidewalls in most cases are stiffer, particularly on V or higher speed-rated tires. Less lag from steering wheel input to when the car starts turning. Lower sidewall suffer less from hysteresis(deflection & straining from bumps and turns).