So what are you guys inflating your tires at for normal use?

Some argue you should inflate to sidewall PSI, but just want to see what you guys think

Front - 32
Rear - 35

I don't really know why I have the rears higher lol. Should be the opposite?

I don't use sidewall PSI for the rears becuse of the loss of traction.

What experiences do you guys have?

 

im usually around 33-35 F and 32-34 R depending on seasons

 

I have NEVER heard of anyone using sidewall pressure, except when they did not know any better.
I usually run 1 or 2 lbs higher than the pressure specified on your vehicles door post.
I run 34 psi right now in my FX and that is also what I ran in my G35 sedans.

 

It depends on conditions, tires, and temperature. Generally in my sedan, I go 32 psi in all four wheels cold temperature, and that's just fine for daily driving with my Yokohama S-Drives. Before, I used Goodyear Eagle F1 GS-D3 and those were better around 34 psi.

So, how do you determine the "correct" temperature? I drive my other car quite a bit at the track, so tire pressure is very important. The best pressure for maximum grip is the one which utilizes the largest portion of the tire's surface, meaning that it's not overinflated and not underinflated. The only way to tell for sure is to measure the tire's temperature with a pyrometer in three places; the two edges and the middle.

You want the temperature gradient across the tire to be linear. You can never have the same temperature in all three measurement spots because of toe, camber, etc, but if you plot the three temperatures on a piece of graph paper, you want them to make a straight line when you connect them. If the three points make a V, you're overinflated since the middle is generating more heat than it should. If the shape is a ^, you are under inflated since the edges are heating up too much relative to the center and the tire is cupping.

Is this overkill for a street car? Yup

 

37 all around and I'm getting very even wear on all 4 tires even tho I'm dropped.

 

I do 35psi all around, haven't run into any problems.

 

35 all around for me too

 

35-40 PSI for me.

 

NT05's ~35psi front and rear.

 

45 because im stretching tires

 

Most tires now are load rated at 51 psi so 78-80% of max 40-41 psi is ideal unless you brake a lot.

Aslways calculate the weight on tires underdiffering handling situations.

Set the psi to create the size of the contact patch [in square inches] you wish.

 

That's just the MAX inflation pressure.

What pressure to inflate your car's tires is written on a sticker usually in the door jamb of every car.

Only people i know that inflate their tires to the number on the actual tire just don't know any better.

WHat pressure to use depends on MANY factors, and there isn't one pressure for each car and tire. Factors are weight of car, weight on the wheel, and contact patch area.

Personally, i've actually painted a line across the tire and inspected the wear pattern as the paint wears away. Wear in the middle first and the ttire is overinflated. Wear on the sides first and it's underinflated.