My Toyo Proxes 4 195/50R15s are on. Should I run the max PSI of 50 or is there a specific PSI for my car?

 

hahah stay away from 50.
30-40 is a good range for most tires.
just start with 35 front/rear

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JRI94 &raquo;</TD></TR><TR><TD CLASS="quote">My Toyo Proxes 4 195/50R15s are on. Should I run the max PSI of 50 or is there a specific PSI for my car?</TD></TR></TABLE>

dam i;ve never gone past 40 psi.. let alone 50.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jwn7 &raquo;</TD></TR><TR><TD CLASS="quote">hahah stay away from 50.
30-40 is a good range for most tires.
just start with 35 front/rear</TD></TR></TABLE>

yeah this is wat i do. 35 psi all around.

 

i allways set my tires 5psi down all around for daily driving.

 

I always follow what the dealer advise when it comes to tire pressure - 30psi.
But when on track, I go 26psi since tires heat up more on the track.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emong3 &raquo;</TD></TR><TR><TD CLASS="quote">But when on track, I go 26psi since tires heat up more on the track.</TD></TR></TABLE>

Obviously we don't do the same kind of tracking . I'm at 45 now. They feel stiff. I think I'll take a little more out and try 40. Thanks guys.

 

never put them at the max.
i work at a tire shop and i put them at 32 psi always.
unless i need to adjust for more or less but on average 32 is the best number.

 

Anybody else have any input?

 

Ya I set mine for 35 on the street and usually like 18-20 at the track....But that was when I was turbo and couldn't find traction. I had Yokohoma AVS ES100s btw.

 

Set the rears at 2 psi lower. They aren't holding as much weight as your fronts. Setting them all equal won't necessarily give you equal handling. In that case, the rears would be a tad too stiff. And 35 for the fronts sound good. Adjust up and down as handling and road conditions demand.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by delScho &raquo;</TD></TR><TR><TD CLASS="quote">Set the rears at 2 psi lower. They aren't holding as much weight as your fronts. Setting them all equal won't necessarily give you equal handling. In that case, the rears would be a tad too stiff. And 35 for the fronts sound good. Adjust up and down as handling and road conditions demand. </TD></TR></TABLE>

Toyo told me AT LEAST 33psi. I'm thinking 38F/35-36R. Sound good to anybody else?

 

It should say it on the car. Either check the sticker in the door jam or in the glove box. I guess thats for stock only though. I run 35 fronts and 32 in the rears. Steelies 185/65R14 (i think)

 

I never go above 35. I try to keep my tires within the 30-35 range. That's for street.
For my azenis i run 30 on the street. Havn't tracked it lately cause i still have a busted cv joint. But when i do i either just keep it at 30 or go down to around 25.

For your tires i'd go with 35. That sounds like a good psi.

 

50 is the max pressure the tire can handle including the increase in sidewall pressure due to heat. Always leave a 15 psi allowance from cold tire pressure to max tire pressure. 50 - 15 = 35.

 

i always have my PSI at 32 for daily. didn't know anybody would go higher.

 

I just go with what Honda says. 35 in the front, 32 in the rear.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by greenf1 &raquo;</TD></TR><TR><TD CLASS="quote">50 is the max pressure the tire can handle including the increase in sidewall pressure due to heat. Always leave a 15 psi allowance from cold tire pressure to max tire pressure. 50 - 15 = 35.</TD></TR></TABLE>

So by what you're saying my stock tires should've been set at 20 psi?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jL iLLuZiOnz 9 &raquo;</TD></TR><TR><TD CLASS="quote">i always have my PSI at 32 for daily. didn't know anybody would go higher.</TD></TR></TABLE>

You gotsta go higher for autox!

I have them at 38F and 36R. I think I'm going to drop them a tad more. Understeer...

 

If you want them to wear evenly you set them to factory spec. In the glovebox of my 94 EJ1 it says 29 front and rear. Doesn't matter what size tires you are using as long as the weight of your car is still stock. If you use more psi than factory spec it will wear the center of your tires. If you use less than factory psi it will wear the edges. In my experience, lower psi means more grip but also more friction with the road.

 

thats the max psi i put mine at around 32 should say in your glovebox yo

 

So I guess going as low as 18psi like my BFGs are out of the question huh?

 

I'm running 36F and 33R on my 205/40/17 Bridgestone Potenza S-03's....rides smooth as a baby's bottom and haven't had any abnormal treadwear

 

[QUOTE=JRI94]

So by what you're saying my stock tires should've been set at 20 psi?

For factory tires you should always follow the factory specs on your door jamb. What Im referring to are tires that have max psi of 44-50.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by IVI &raquo;</TD></TR><TR><TD CLASS="quote">never put them at the max.
i work at a tire shop and i put them at 32 psi always.
unless i need to adjust for more or less but on average 32 is the best number.
</TD></TR></TABLE>
32 is the recommended psi for almost all cars...trucks/suv's should be 35 or maybe 40

 

i would stay at 32psi. i use the same size tire and wears evenly at that pressure

 

Well not one person has mentioned how to actually set up tire pressures. You get yourself a needle style pyrometer, some note book paper, and on a track day record the three temperatures, inside, middle, outside. Adjust the tire pressures accordingly. Dial in your camber while you're at it. I wont go into the full instructions cuz it will probably come with your pyrometer, or you could search online. If you're ******* whack in the head like me you'll do this on the street too since there just aren't enough track days.

Results of all my tire pressure adjustments land around 36 front, 33 rear, for my 93 HB. It varies a bit but that's what I run and that's what's comfortable on the street. Reducing your tire pressure DOES NOT increase traction unless your tire pressure is too high. When the psi is too low, youre using the outside edges of the tires and not the center, and when the psi is too high, the opposite is true. So obviously you dial in the tire pressure so that the face of the tire has even pressure on the edges and the center.

Increasing traction wont hurt your gas mileage unless you're using too wide of a tire. 195/50/15 or the equivalent for your size rim is good for street for these cars, maybe you could justify a 205 for track, any more than that you better be drag racing with some mean power.

You have to check the tire pressure just before the sun comes up, w/out driving the car. Write down how much to adjust each tire, and if you don't have an air compressor you drive to the gas station, measure the tire pressures again, and then make the amount of adjustment you wrote down earlier. Just from the sun coming up or driving a block or two slowly, tire pressure will go up 3 psi. Weight doesn't effect psi but the more weight, the more load on the tire meaning more sidewall flex, meaning increase the tire pressure to stiffen the sidewall. Of course if you're using shitty tires with weak sidewalls, just set it at factory spec and don't waste the effort.

That's it from me, I'm just clueing you in so you can do a search online or go read one of those Honda/Acura suspension books at Barnes and Nobles w/out buying it.