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Author Topic:   Tire Temps---Need some help
Wheels47
Dirt Maniac

Total posts: 121
posted April 07, 2002 11:51 AM
Ok here's my story can you guys help me??
Tire temps are as follows--what do I need to do and should they be closer???Seems to me the front end is not working hard enough..

The first numbers are outer -then middle--then inner and then total

LF-- 79-77=74== 230
RF-- 78-84-87== 249
RR-- 99-89-94== 282
LR-- 94-100-105== 299

What can you tell me from these numbers and is there a good web site to get info on tire temps??
Thanks much in advance--Wheels

jammin
Dirt Administrator

Total posts: 5060
posted April 07, 2002 12:56 PM UIN: 16262997
What are the air pressures in the rear? It looks to me that you need to take a little bit of wedge out of the car and also work on your right front camber settings, Left front isnt too bad. The temp differnces in the left and right side of the tire show me that the air pressures might need to be increased just a little also on the left front and both rears. Your not that far off, just a little tweaking.

jammin

Wheels47
Dirt Maniac

Total posts: 121
posted April 07, 2002 01:28 PM
Left Rear is 6 lbs and right rear is 12 lbs.We seem to be having a lot of a push going in and I thought we need to do something with the right front tire to help get more bite.. any thought on this ?? thanks

jammin
Dirt Administrator

Total posts: 5060
posted April 07, 2002 02:59 PM UIN: 16262997
raise your left rear pressure to 8.

That should help your left rear temps. I think it will help the difference in your right rear temps as well. The temperature in the middle of the right rear tire shows that your air pressure is too low, you need to raise it to get that center temp up to the level of the others.

jammin


[This message has been edited by jammin (edited April 07, 2002).]

[This message has been edited by jammin (edited April 07, 2002).]

Roadhzrd
Dirt Maniac

Total posts: 132
posted April 07, 2002 09:41 PM UIN: 28276986
A little tight? I'd think it was way too tight by those numbers but there are so many variables when checking tire temps on dirt. I always go by what I feel instead of temps but they can give you a baseline to see if the temps are close to how the cars reacting.

Wheels47
Dirt Maniac

Total posts: 121
posted April 07, 2002 10:22 PM
Roadhzrd--Please help here--What would you say would be better numbers to see?? I feel like the tire temps on the front are way to low or the back is to hot.. Don't these numbers show a very tight car or a severe push on the entry?? Help me here am I thinking right?? Thanks Wheels

jammin
Dirt Administrator

Total posts: 5060
posted April 07, 2002 10:43 PM UIN: 16262997
Wheels.....when I said to raise the left rear two pounds, that is because of the scrub you have on your temps. The right rear temp in the middle shows that your air pressure isn't high enough in the right rear tire. When you air it up a little, it will counter the wedge you added when you added 2 lbs on the left for the scrub. Your front temps show that the camber settings could be worked on a little also. Now, after you get your temps even across the tires, the tire temps from left to right rear should be close to the same(this means you have 50% dynamic weight distribution approximately) this is where you want to be. All you have to do is increase or decrease the wedge to get it there. If you notice, both your right front and left rear tires are both carrying the weight on the car. It is shown by the temps. If you decrease the wedge, if you still have too much, after making the changes, then you should be able to decrease the wedge and dial it in.

Sorry for not making myself clear.

jammin

Wheels47
Dirt Maniac

Total posts: 121
posted April 08, 2002 09:19 PM
ok jammin now I under stand what you were saying before. Sorry for my not understanding but I am new at this and still have a lot to learn.. We will try this--Thanks for the info.....Wheels

HIGH VOLTAGE
Dirt Full Roller

Total posts: 37
posted April 08, 2002 09:22 PM
WHEELS GO TO THE TOOLBOX SECTION ON THIS PAGE (UPPER LEFT) CLICK IT THERE IS A TIRE TEMP ANNALYSER THERE VERY HELPFUL USE IT ALL THE TIME ITS GREAT.LOT OF OTHER GOOD STUFF THERE.

Wheels47
Dirt Maniac

Total posts: 121
posted April 09, 2002 08:00 PM
Before I get banged on here I want to say that i know there is a difference between asphalt and dirt but I would thing the same basic's would apply.. I keep looking at these temps and it seems the front end will push because the temps on those tires are way lower than the rear tires.. Am I thinking wrong that the hotter tire is working harder than the rest?? Shouldn't the car be set up to make the front tires a bit hotter to take out push?? I've read somewhere that the right front tire should be about 10 degrees hotter than the right rear tire in total heat across tire... This may not be the case but thought maybe someone out there had experenced those kinda setting on tire temps... I've also read that a good setup man can tell you what the cars doing just by temping the cars..Just wondering???Mainly just fooling around with temps to see what they do tell me...

I have a freind racing that does well so I think he will let me temp his tires to do a comparison..

Jammin--- The panhard bar is also called a track bar-- is this true??? Is it also used for the wedge bar??I'm a bit confused on the wedge bar ??

Help!!!

Thx Wheels

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