inflate or deflate tires in summer ?!

[EsperHamid]

in hot days 90 F my tires start squeaking, it is a rubber squeaking sound, my tires all four are at 35 psi, should I inflate them more or deflate them ?!

[sonikaccord]

I would say deflate. Hot air expands.

Also check your tire beads, it's strange to me that heat would make the tires squeak.

[accordztech]

Is your tires squeeking on turns or going straight? Its possible you can have your toe out of alignment to.

[deevergote]

I believe 32psi is the correct pressure. Overinflation of tires can be dangerous.

Also, what type of tires do you have? Cheap tires with a hard rubber compound can squeak just because there's no give to the rubber.

Are you lowered? Are your tires in good condition? (check the inside edges...)

[EsperHamid]

@deevergote, it means I should deflate to 32 psi, lowered no, my tires are bridgestone potenza GIII these tires were in my car when I bough it from the previous owner back in 2011 and the tires production date are 2004

@accordztech, my tires squeak going straight and turns, I am sure it is a rubber squeak not something metal, it happens upon acceleration during hot days.

[cloudasc]

@deevergote, it means I should deflate to 32 psi, lowered no, my tires are bridgestone potenza GIII these tires were in my car when I bough it from the previous owner back in 2011 and the tires production date are 2004

@accordztech, my tires squeak going straight and turns, I am sure it is a rubber squeak not something metal, it happens upon acceleration during hot days.

If your tires are that old, you should definitely get some new ones... Have you actually recently looked at the condition of the tires (especially on the inside) for cracks in the sidewall or other damage?

Also how long has this issue been going on? Did it just recently start to happen? A timeframe of events might help isolate the issue.

[accordztech]

@deevergote, it means I should deflate to 32 psi, lowered no, my tires are bridgestone potenza GIII these tires were in my car when I bough it from the previous owner back in 2011 and the tires production date are 2004

@accordztech, my tires squeak going straight and turns, I am sure it is a rubber squeak not something metal, it happens upon acceleration during hot days.

Look at your treads. If you notice that there are darker treads and lighter treads then you have a toe issue.

http://www.monroe.com/images/support.../tirewear6.png

Also old tires can do this as well.

You know most tire shops inspects cars for free. Take it to a good shop and they will tell you if your tires are rotty or if you may need an alignment.

[EsperHamid]

frankly when I changed my suspension, I aligned my tires using the string method, and checked alignment out like 4 times.

I know an alignment shop will do it with computers and what not but I don't think that the squeaking would be caused by wrong toe, else my CB7 would wander a lot on the road and I'll know that the alignment is wrong but it doesn't.

this happens in summer during hot days maybe because of the asphalt or inflation 35 psi and to be more clear, yes the tires do look old after all 2004 we're 2014 and I recently installed 1 Synergy M5 (2012) tire on my front passenger side because that potenza giii was busted and repaired several times until it got a hard one on its sidewall.

it is clear that the shoulders of the Synergy M5 are smaller than the rest of 3 potenza GIII even though the size info on the tires are the same.

[deevergote]

Being a decade old, the rubber compound in those tires has probably started to break down years ago. They may have been good tires once, but certainly not anymore. Age and heat will change the properties of rubber.

If anything, you should get new tires for your own safety. Tires that old can't possibly be safe. Get new tires, and have the wheels aligned professionally.