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Author Topic:   Let's talk about tire temps
UFnARacing
Member
posted April 10, 2002 11:54 PM
Although my car is actually in the "hobby stock" class, I would consider it a pure stock. But, I thought this to be a better venue for this question. So, if you have patience (I don't, or else I wouldn't be asking) and you have the knowledge, read the rest.

I think logically, so, can you tell by tire temps if your car is set up correctly? By correctly I mean, that it's handling the best it can with your driving style for the particular track your at.

To me, total weight of the car doesn't matter. My question is.....If all 4 of your average tire temps are within about 5 degrees of each other, is that the best possible traction you can get? Again, using that driving style on that track.

That's what I'm trying to find out. Besides "feel", how do you know that your car is setup the best? To me the tire temps will tell all. Am I right?

I have lot's more about tire temps on my mind, but I'll save that untill after I get some thoughts on what I've asked already.

Come on now, don't be shy, this is a good subject to get into!!!

Randy



snowman
Member
posted April 11, 2002 01:03 AM
Randy, Have You actually taken your tire temps ? On a pure stock,in a short race,on dirt, Your tire temps probably won't be high enough to tell You alot.

If you are able to get some heat in the tires, you can learn some things from them. Like camber setings. You should always take advantage of any tuning tool at your disposal.

I understand your logic, but tire temps are not the way to determine the best set up or if you are getting maximum traction.

Consider this, accelerating, you will heat the rears more than the front. Braking, You will heat the front more than the back.

What if, Your car is pushing hard in the corners,heating up the fronts. You lose speed and then spin the rears trying to get down the straits. Then, You pull in the pits,check your temps, and they are all close. Your car stinks but your tire temps say its great.

In short, Lap times matter,not tire temps. In every case, You must tune YOUR car to YOUR driving at YOUR track.

I suspect that this is not the answer that you are looking for,Sorry about that. Its always a question of what You need in relation to what you have.

Good Luck
Snowman


UFnARacing
Member
posted April 11, 2002 09:52 AM
As I was trying to fall asleep last night I was doing some thinking. What you described is exactly what I was thinking. By the way, "my track" is a big 1/4" mile high banked asphalt oval. I should have mentioned that, obviously tire temps would mean more on asphalt than on dirt. I understand that on dirt you need more side bite for traction, but I'm not sure what temps you would really want for asphalt, I'm new to asphalt. I use the tire temps across the width to determine correct camber and air pressure. I guess what I need to do is really keep track of the tire temps when I'm turning really good lap times and try and stay there.

What I was thinking about last night was more along the lines of heating your tires up at the entry of the corner and cooling them off on the exit or vice versa. Pretty much the same as what your talking about.

I'm just trying to get a feel for what "good tuning" is and how to get there.

Thanks for the reply, and keep em' coming.

Randy

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