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How "hot" do the brake pads/rotors get on the street versus track?

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How "hot" do the brake pads/rotors get on the street versus track?

Old 06-22-07, 01:15 PM
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How "hot" do the brake pads/rotors get on the street versus track?

Hey guys

I'm wondering if any of you guys have used a pyrometer to measure the temps of the brake pads/rotors just to see how "hot" it gets on the street versus the track.
I'm just going to include all types of track activity...to simplify things. And all types of street activity, such as stop & go traffic. Actual temp numbers would be great.

Especially from those of you who braked hard/long enough to boil the brake fluid. I'm highly interested to know what the temps are.
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Old 06-22-07, 04:00 PM
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IIRC we had calipers that were getting over 400F on an ITA CRX. We had the temp paint that changed colors depending on how hot it got then it stays that color. There are also plastic stickers you can put on your calipers that do the same thing with colors.

I've never worried about street temps, they are probably below 250F. Usually its not the fluid that boils even on hard street driving or racing. Its the moisture that the fluid absorbs that turns to steam and then you get a squishy pedal from the air bubbles. Change your fluid regularly and you will be suprised what an effect it has.

A quick net search and I found a chart that gives temps for approximate colors of metal. It looks like those glowing rotors you see on race cars could be over 1500F!

Last edited by jgrewe; 06-22-07 at 04:08 PM.
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