What is the best tire pressure for Honda Accord V4?

[Luftmasse]

Originally Posted by Char Baby
We don't know your knowledge of tire psi.
Too much air can cause tire wear in the center of the tread.
Too little air can cause tire wear on the outside/inside edges(shoulders).

I would start with the recommended psi that your vehicle requires(usually listed in the door jamb) for your tire size & speed rating.
Then add small amounts of air to see it your fuel mileage changes. Most likely it won't just from more air alone.
Also, how much of a harsher ride(with more air) can you tolerate?
Do you prefer better/crisper handling & turn-in?
Or a slightly better ride over broken pavement?

These are just some factor to consider.



Not to start turbulence, however, my tires max inflation shows 51 psi and I pump them to 40-42 psi (cold pressure) because I like them stiff, just personal preference. I have never had problems with the center tire wear more than the outter/inner sides of the tire.

 

[redbone3]

Originally Posted by simple_gifts
Originally Posted by CR94
V4's are pretty rare, especially in Accords.


?

To the OP: your car either has a V6 or an inline 4; V4 is not an engine configuration used in automobiles.

(people can now refrain from pointing out the handful of exceptions)

Since this is primarily a learning site, I thought I would clarify.


In days gone by I have owned two SAAB 97's and one SAAB 95, all had cute little V-4 motors made by Ford.

 

[2010Civic]

I'd run a few PSI over what the sticker on the car says. (Probably 32)

 

[SubLGT]

An interesting 4 min video about automotive V4 engines:

https://www.youtube.com/watch?v=LkYxdT7Ovtw&list=PLyLq_lAfSF6W0ZkzSN5IijSycYTCSYL_K&index=71

 

[Kawiguy454]

As is Typical the hand wringing follow the manual bot replies pile in. A 3500 lb car is barely gonna notice if you have 36 psi or 44 psi in the tires as far as contact patch/traction/safety goes. All 4 tires on a passenger car probably has =< 1 square foot of "Contact" patch. So 8 psi one way or other is not gonna change that much.

To directly answer the question directly more PSI will support the load better and the tires sidewalls will have less flex/friction and thus lower rolling resistance so higher MPG. going 40-42psi wont hurt a thing and will make the car feel tighter and handle more precisely. Only downside is bumps may be a little sharper.

 

[aquariuscsm]

Won't overinflating your tires make it harder on your suspension?

 

[jadatis]

The 44psi is the maximum allowed cold pressure of a normal car tire( P-tire) , in standard load and XL/ extraload/reinforced) ,
But also speed is important for the needed pressure.
The pressure needed for the maximum load given on tire upto 99mph , is for standard load P-tire 35psi in american system, but nowadays often european 36 psi is used. For XL this pressure is 41/42 psi.
This is called the reference-pressure.

Now there is a system officially used using a formula in wich referencepressure( RP) is used and a system for highening up this RP for higher speed then 99mph. For this the difference between RP and maximum cold pressure is used. RP is also cold pressure.


This gives the pressure for speed and weight, at wich no overheating of any part of tire, and tires are constructed that way, that then no uneven wear.

But you can go higher then the calculated pressure, and still have even wear.
I determined ( but who am I, a pigheaded Dutch selfdeclared tirepressure-specialist) that if you have more then 85% of the weigt , the pressure is calculated for for 99mph, that then comfort and gripp is still acceptable. Centrewear probably happens below 70%.

So in this range you can play with the pressure, to influence roadhandling and fuelsaving.

Comfort is subjective, and best gripp is not always needed. And on highways the road is that egal, that below 85% comfort is still acceptable.

TESLA prescribes often 42psi while calculated , probably 30/35 psi is needed, yust to get a higher actiradius of the battery. Sometimes in fora you read about centrewear. Yust to show you that even carmakers also are less interested in comfort and gripp.

To make it short, to low pressure for load and speed, can cource tirefailure , but to high is never unsafe for the tire( mayby sooner puncture) .

 

[zeng]

Originally Posted by painfx


Not to start turbulence, however, my tires max inflation shows 51 psi and I pump them to 40-42 psi (cold pressure) because I like them stiff, just personal preference. I have never had problems with the center tire wear more than the outter/inner sides of the tire.

Another vote from several 44 psi tires calling for 31/35 psi .

 

[bachman]

Originally Posted by dgvu89
Hi everyone,

My tires allow max pressure @ 44PSI.
My goal is to have the best MPG in summer.

Thank you!


The tire sidewall is it's own thing and may be the OEM tires supplied or something similar or way different. I've had 44 psi rated tires on smaller cars. Something around 3100 - 3400 pounds gvwr is going to ride like a Brick unless/until you find a reasonable psi that works well. Typically, those cars coming with 44 psi sidewall ratings have the car spec at 34 to 38. As said earlier here by many, the car spec on the door jam is a good guideline and Max pressure will offer better or best mpg if you can handle the side effects. On most cars I've owned, Max psi is a designation for the tires (presumed maximum or safe load) of the car with gear, people or trailer. This is by spec, not over loaded and wouldn't tend to deliver any benefits if psi is over corrected for the actual load.

Car mpg is just another spec that fits the operation characteristics of the car - or is supposed to. To tweak more out of it, consider the commute or your ride experience and test it some. Then you'll know if your hyper-mile or cost savings project is still fun and worth it.

Some tires are better than others at various traits, noise level, pounding or slapping road joints or imperfections, harsh or thumpy ride, pot hole mitigation- kill alignment or shocks / struts ? You can exaggerate the way the tires, wheels and suspension respond or interact in ways that cause or invite damage and become costly repairs or maintenance.
On the other hand, I have found it's really easy to experiment by just 1 - 3 psi changes to find the personal pref on all of that stuff. Hopefully your town and roads or commute routes are way better that most and if so, you may have a good opportunity.
ME , I' m too old and grumpy running max or even near max psi. With our roads, we are not spoiled. Resulting drives, rides, or commutes = b-slapping like marbles in an empty soup can. My radio won't play loud enough to compensate.

 

[Lubener]

Originally Posted by dgvu89
Hi everyone,

My tires allow max pressure @ 44PSI.
My goal is to have the best MPG in summer.

Thank you!

It's on your door's decal not on the tire.

 

[CapriRacer]

Perhaps it is time I stepped in to correct some misconceptions.

Long Version: Barry's Tire Tech: Load Tables

Short version: Tires are standardized. They are standardized by organizations such as The Tire and Rim Association (for the US), TRA for short, and ETRTO (European Tyre and Rim Technical Organization) While there are some detail differences between these organizations, for practical purposes, the load tables are the same.

That means that the pressure listed on the vehicle tire placard is applicable to ALL tires, regardless of the manufacturer - although you have to pay attention to the tire type. A Passenger car tire is different than an LT tire, even if the numbers are the same!

Put another way, it doesn't matter who manufacturers the tire, the vehicle tire placard is applicable. Does that mean that all tires will feel the same? No! But it does mean that the load carrying characteristics are!

Plus, it doesn't matter what the max pressure on the tire is. The load carrying capacity is the same! (If this doesn't make sense to you, read the link above.)

The same applies to speed rating. Put an H rated tire on a car listed for an S rated tire: The pressure specified by the vehicle tire placard is applicable. Again: Will it feel the same? Probably not!! But the tire's load carrying capacity IS the same.

 

[ARCOgraphite]

Originally Posted by Kawiguy454
As is Typical the hand wringing follow the manual bot replies pile in. A 3500 lb car is barely gonna notice if you have 36 psi or 44 psi in the tires as far as contact patch/traction/safety goes. All 4 tires on a passenger car probably has =< 1 square foot of "Contact" patch. So 8 psi one way or other is not gonna change that much.

To directly answer the question directly more PSI will support the load better and the tires sidewalls will have less flex/friction and thus lower rolling resistance so higher MPG. going 40-42psi wont hurt a thing and will make the car feel tighter and handle more precisely. Only downside is bumps may be a little sharper.


Some incorrect and limited assumptions not borne out in practice.

Incorrect.

 

[bachman]

Originally Posted by ARCOgraphite
Originally Posted by Kawiguy454
As is Typical the hand wringing follow the manual bot replies pile in. A 3500 lb car is barely gonna notice if you have 36 psi or 44 psi in the tires as far as contact patch/traction/safety goes. All 4 tires on a passenger car probably has =< 1 square foot of "Contact" patch. So 8 psi one way or other is not gonna change that much.

To directly answer the question directly more PSI will support the load better and the tires sidewalls will have less flex/friction and thus lower rolling resistance so higher MPG. going 40-42psi wont hurt a thing and will make the car feel tighter and handle more precisely. Only downside is bumps may be a little sharper.


Some incorrect and limited assumptions not borne out in practice.

Incorrect.



* An 8 psi variation on anything I've owned would dramatically affect the ride, handling and tire wear without any doubt.

* Mushy isolated soft tires wear fast and will not transmit meaningful feed back to the driver but more importantly, stability and handling are not just performance factors - THEY ARE SAFETY FACTORS !

 

[davglt]

mine calls for 32 front 30 rear, I have found in 225,000 miles that 34 front and 32 rear gives best even wear

 

[MCompact]

I run what's recommended on the door jamb placard unless I'm tracking the car.

 

[bbhero]

Originally Posted by bachman
Originally Posted by ARCOgraphite
Originally Posted by Kawiguy454
As is Typical the hand wringing follow the manual bot replies pile in. A 3500 lb car is barely gonna notice if you have 36 psi or 44 psi in the tires as far as contact patch/traction/safety goes. All 4 tires on a passenger car probably has =< 1 square foot of "Contact" patch. So 8 psi one way or other is not gonna change that much.

To directly answer the question directly more PSI will support the load better and the tires sidewalls will have less flex/friction and thus lower rolling resistance so higher MPG. going 40-42psi wont hurt a thing and will make the car feel tighter and handle more precisely. Only downside is bumps may be a little sharper.


Some incorrect and limited assumptions not borne out in practice.

Incorrect.



* An 8 psi variation on anything I've owned would dramatically affect the ride, handling and tire wear without any doubt.

* Mushy isolated soft tires wear fast and will not transmit meaningful feed back to the driver but more importantly, stability and handling are not just performance factors - THEY ARE SAFETY FACTORS !



Very good post here ↑↑↑↑↑

 

[dubber09]

Originally Posted by dgvu89
Hi everyone,

My tires allow max pressure @ 44PSI.
My goal is to have the best MPG in summer.

Thank you!


IMHO, run +3-5psi over recommended in front tires and +2-4psi in rear tires, no more.

Having best MPG is useless if your wear tires prematurely, have harsh ride, lose tire grip and potentially wear out suspension faster too.

 

[dgvu89]

Thank you for all of your opinions!
I will go for 38 psi front & 34 psi rear. I think that what Carmax did for my car as well.