What happens when tires get too hot?

harman.khinda

I did a 2.5 hour drive (gps said 3.5 hours) on 36W when it was ~95 degrees outside. The road is famous for a sign that depicts twisty roads for the next 140 miles and is a blast to drive in the Z. I noticed my tires were chirping more than usual and some loss of traction near the end of the drive. Will the tires just go back to their normal characteristics after a grueling drive like this? Is it ok to just spray the tires down with water as they get too hot to keep em in the right temp range?

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Chan Chee Hoe

Stick to the stock pressure,35 Psi, should be fine.

harman.khinda

Ok. I usually run my tires 35 but when i know im gonna hit curves hard ill bump it upto 37. This time though i think i may have been a bit underflated unintentionaly from measuring the tire psi when hot. Good to know but why?

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SouthArk370Z

More pressure = less flexing = less heat generated.

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dvboy

Yea,the funny thing is a lot of guys go to the drag strip and do a big burnout to heat up there street radials to make them more sticky.The reality is they take the tires out of there optimal temperature(too hot) and end up with worse traction.

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Brendan

That depends on the type of tire. Certain tires can heat cycle and lose traction after being heated up to or past the optimal operating temp.

harman.khinda

Does it depend on the specific manufacter/model or like category: extreme performance tires, max performance, drag slicks...? I have sumitomo htr z111.

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Chan Chee Hoe

In S'pore,an all round Wet & Warm Country,usually most tyres came from Thailand,which Mfg tyres more suitable for our Climate...But sizes for our model still made in Europe or Japan,because not common sizes...

Brendan

It depends on the tire specifically. I know my re71 don't heat cycle but I have no experience with sumitumo.

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kenchan

yah, tire specifically and the driving surface. not all roads are the same. some just makes the tires screech more dan others.

when i lived in LA many years ago, i usually run a tad higher psi in the canyons too. better steering response time.. especially running stiff suspension back then 1psi change was quite noticeable.

Wonka2581

Your fine don't worry about it. It has to do with the drag factor of the road / surface. When I do traffic crash reconstruction for work, we have an instrument to check the drag factor of the roadway.

I.E. have you ever been at lets say a shopping mall and make a sharp turn on the slick black top? the sealer they use in the parking lot areas is extremely slick and has a very low drag factor. Hence why your tires will always make a squealing noise when you make a sharp turn on that type of surface.

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ufoz8mycow

Why would you add tire pressure if you're going for a hard drive? Air expands as it gets hotter so if you start with a lower pressure it'll naturally increase as your session goes on ending up in tbe right place. Start with your pressures too high and as the tires get hotter and start over inflating you end up with tires that'll slide a bit more, hence what the OP was experiencing.

ssmoked

Really? I did a 12.9 quarter mile with my bone stock 370 after burnout. 13.3 without. Could you explain what happened?