[PetitFrereAccord]

I set front 35 psi and rear 33 psi for the balance between highway cruise and handling.

I honestly don't know whether running higher psi is worth it. You risk having longer brake distance in emergency situations, and your tires risk uneven worn out...

I just found these links and thought I should share with you and others who may just want to have a glance. Tesla vehicles have it on their door jam to run their psi at 42psi or 45psi. That is on tires which have maximum psi of 50psi. They all say Tesla recommends this for maximum efficiency and best mpg.

You know Teslas are very high performance cars but also give great mileage. So, for the manufacturer to suggest those very high psi it means they know what they are talking about.

According to Tesla, the high psi gives best mpg and range. They are running their tires not at the maximum psi of the tire. 42psi or 45psi is lower than the max psi of 51psi, but still a high psi for someone like me who drives a Honda Accord where they recommend 33psi. I am running 36psi now and I believe it is not a high number per say. But I would love to experiment with 40psi on my next set of tires because that tire has a max psi of 51psi. This is what I plan to do to my car.

Tesla Model 3 high recommended oem psi of 42psi and 45psi...

Tesla high recommended psi across many years and models...

 

[Ziyang]

I just found these links and thought I should share with you and others who may just want to have a glance. Tesla vehicles have it on their door jam to run their psi at 42psi or 45psi. That is on tires which have maximum psi of 50psi. They all say Tesla recommends this for maximum efficiency and best mpg.

You know Teslas are very high performance cars but also give great mileage. So, for the manufacturer to suggest those very high psi it means they know what they are talking about.

According to Tesla, the high psi gives best mpg and range. They are running their tires not at the maximum psi of the tire. 42psi or 45psi is lower than the max psi of 51psi, but still a high psi for someone like me who drives a Honda Accord where they recommend 33psi. I am running 36psi now and I believe it is not a high number per say. But I would love to experiment with 40psi on my next set of tires because that tire has a max psi of 51psi. This is what I plan to do to my car.

Tesla Model 3 high recommended oem psi of 42psi and 45psi...

Tesla high recommended psi across many years and models...

Thanks for the link, but I disagree with applying Tesla’s tire pressure recommendation to Accord (hybrid).

Tesla and many other EV models all have a heavy battery (>75kWh, or 1060 lb) and they must set higher psi for the tires to provide the sufficient load capacity. — A tire’s load capacity is more or less proportional to its pressure until a max value, say 35psi for non XL and 41psi for XL tires.

The high psi does not necessarily mean they are good. A lot car reviewers have commented that these long range EVs all have a ‘bouncy and firm’ ride due to the high tire pressure.

You simply cannot apply this to Accord hybrid because it isn’t that heavy, and your Honda manufacturer never recommends you inflate the tires to 41 psi. 41psi makes a Tesla’s tire have desirable contact patch on road, not an Honda Accord.

 

[PetitFrereAccord]

You simply cannot apply this to Accord hybrid because it isn’t that heavy, and your Honda manufacturer never recommends you inflate the tires to 41 psi.

You are correct in what you just said. But I personally like to have my psi set at 2psi above oem since tires lose air over time. Then I bought my first Hybrid and found out about hypermiling and got interested in it.

Many drivers suffer from under inflation as most people have a busy life and important things to do and do not have time to check tire psi. That is why under inflation is very common out there especially during cold weather when it is easy for many cars to drop below oem psi and many drivers ignore it since tpms light is not on yet.

My interest in hypermiling and getting the most miles made me increase my psi by 3 to 36psi. At this psi, it is not that different from oem to affect anything noticeable. I have done my own personal research and concluded that people who hypermile religiously believe in higher psi and they go extreme like almost always having their psi close to or at max psi recommendation for the tire. I personally will not do that, but I will go higher than oem. That is why I settled for 36psi on the oem tire and I plan to do 40psi on my next set of tires.

I will not advocate anybody to do what I am doing. But there are many drivers out there with hybrid or non-hybrid vehicles who make their own decision to run their psi 2 to 5psi above oem. I am just one of them with the goal of hypermiling.

That is my story and I am sticking to it.

 

[rlee777]

PetitFrere -- I might do this with the Pirelli Cinturato P7 AS +2:

https://www.tirerack.com/tires/tires.jsp?tireMake=Pirelli&tireModel=Cinturato+P7+All+Season+Plus+II&sidewall=Blackwall&partnum=155HR7CP7ASP2&tab=Sizes

With the 215/55/17 size in the H speed rating, each tire is only 21 lbs:

However, the Pirelli warranty does not extend to non-OEM sizing if this means anything. Also may have an issue finding a decent tire installer who will install this size (the HAH manual does not list alternate tire sizing). I currently run with these Pirellis in the standard size -- these tires are excellent.

 

[PetitFrereAccord]

I installed my new tires today. Continental Contact Plus A/S 215/55R17. Which is a different size from stock size 225/50R17. I am running my new tires at 36psi, for now, but I think I will bump it up to 40psi when I do my oil change to 0W16.

My old tires were a little worn on the inside, showing an alignment problem. So, I went in for an alignment. Also, my last set of tires I rotated them once oy after 25,000 miles. But this new tires I will balance and rotate them every 5,000 to 7,000 miles.

OEM tires were rated for 55,000 miles. I got only 42,000 miles before replacing.

This new tires are rated for 70,000 miles. I hope I get 50,000 miles before I replace them. I like to replace my tires at 3/11.

 

[Ziyang]

Do you prefer to do alignment at dealership, or any tire shop? I’m a bit curious

 

[PetitFrereAccord]

Do you prefer to do alignment at dealership, or any tire shop? I’m a bit curious

For all the cars I have ever owned, I have never done my alignment at the dealership. I don't know for sure if they are 100% better than Firestone. Just like I get my tires from Discount Tire and not the dealership, since DT offers lifetime balance and rotation on the set of tires.

I have always done it at Firestone mainly because all my cars always get their Lifetime Alignment package. It is expensive now, but when I bought it in 2008 for my brand new Maxima after 6 months of ownership, it was $99 plus tax. I took my Maxima like twice every year for an alignment until I sold that car after 12 years. If I still had that car today, I could still pull up and they would do my alignment for free. That is why I went with Firestone. The lifetime alignment, which is $194 now with tax included

 

[PetitFrereAccord]

I just came across this thread below where some Honda Insight guys are running 38pi to 40psi on their tires which have a maximum psi of 41. Interesting read to me.

Well, I am currently at 40psi, but because of the very cold weather right now, I know I must be somewhere around 35psi to 38psi. But when it finally warms up, I will make sure my tires are set at 40psi for a while to experiment with that before I decide to change or not.

psi and mileage on the Honda Insight Hybrid forum...

 

[PetitFrereAccord]

I just have to add these links from the Honda Insight forum here since this my thread is about my personal research on what to do to my car so when I hypermile I can easily get the best mpg I can get out of my car. Many guys on the Honda Insight are putting 50psi to 60psi in a tire which has maximum sidewall psi of 44psi. And they claim even tire wear. That sounds unbelievable, but I guess it seems some people are truly taking such risks. Then a thread claims their best psi for hypermiling is between 45psi and 50psi, even on a tire with maximum sidewall psi of 44psi.

Well, here are some interesting reads from the Honda Insight forum about high psi. I don't plan to do anything that crazy, but I am currently running my tires at 40psi and will soon go to 45psi and run that for a long time and see.

How much pressure you running in your tires?

Finally: proof the best pressure is 45-50 PSI!

Tire pressure

 

[dbourke]

Still running the Continental? What's your current MPG?

 

[PetitFrereAccord]

Still running the Continental? What's your current MPG?

Yes, I am still running the Continental tires. I have them set at 45psi.

Ever since I got them, each tank of gas I hypermile, I have gotten 58mpg with over 700 miles from the tank. I have also gotten 59mpg with over 750 miles from the tank. So, it is going great. I get those numbers when I am hypermiling and I like to talk about mpg from a whole tank of gas. Or atleast half a tank of gas. Not just for a short drive. I have pictures of that posted on the mileage thread.

But I have to mention these 2 scenarios I had from my recent road trip that I enjoyed seeing.

(1) I drove for 25 miles and got 200 mpg! This was like 12 miles of only going down hill and the rest on flat and some few hills. Car did not stay in EV the whole time but each time it got EV, I had enough battery to let it coast and step on the gas rarely, but I had to drive slower than posted speed limit. But maximum speed here was 55mph, which I did get to 65mph top speed while letting the car coast down hill.

(2) I drove 60 miles from Flagstaff, AZ to Cameron. Speed limit on this road is 65mph. I was doing 60 to 65 with a top speed of 75. But EVERY single car passed me up. But I was not worried since I was interested in seeing what mpg I got by the end of this drive. I did not use the ac at all. Terrain was mostly flat with some downhills and some few hills. I was very impressed.

 

[dbourke]

How is the handling compared to the stock tires?

 

[PetitFrereAccord]

How is the handling compared to the stock tires?

Exactly the same. Top speed still handles awesome. Hypermiling still gives me great mpg.

I personally conclude that the 215/55R17 tires that I am currently running drives and handles the same as the oem 225/50R17 stock tires.

But those Michelin Energy Savers are really a good set of tires to get good mpg.

 

[dbourke]

Exactly the same. Top speed still handles awesome. Hypermiling still gives me great mpg.

I personally conclude that the 215/55R17 tires that I am currently running drives and handles the same as the oem 225/50R17 stock tires.

But those Michelin Energy Savers are really a good set of tires to get good mpg.

The Energy Savers are good in gas but not so comfortable after a while with plenty of tread left These tires SUCK in bumpy roads! I am planning to ditch them and in the fence for either the Purecontact LS or the Pirelli P7 3.
I know that the MPG will drop but winter is coming and I am looking for a good reliable, comfy sets of tires

 

[Hunter Mike]

I’ll be installing 215\55’s next year. I found a smokin’ deal on a closeout at Tire Rack. $364 for a set after rebate.

https://www.tirerack.com/tires/tire...tireModel=Turanza+T005A&partnum=155VR7T005AOS

 

[PetitFrereAccord]

It looks like a good set of tires. Too bad thread count is only 260. That means it is not a long lasting tire.

Do you know how much will your total cost be by the time you pay to get these tires installed on your car?

 

[Hunter Mike]

It looks like a good set of tires. Too bad thread count is only 260. That means it is not a long lasting tire.

Do you know how much will your total cost be by the time you pay to get these tires installed on your car?

$364 for the set, delivered. Installed by me.

 

[PetitFrereAccord]

$364 for the set, delivered. Installed by me.

With 260 thread count. How many miles do you anticipate you could get from those tires? They look like some very good sticky Summer tires. So, you may get about 30,000 miles

I like to change my tires slightly earlier than the recommended norm because I like to always know my tires have very good thread on them. So, I have already started looking at a next set of tires for my car.

These are my choices below according to importance, though from my list below, I actually prefer my second choice. Especially if during this holiday season, there is a way for me to get an extra discount on the drive out price. Then I may buy it. Then I will put my current tires which are halfway gone for sale on craigslist for a price of $150 for all 4. Willing to take $100 for all 4. Then I add money and get brand new tires all over again.

First Choice

Second Choice

Third Choice

 

[Hunter Mike]

With 260 thread count. How many miles do you anticipate you could get from those tires? They look like some very good sticky Summer tires. So, you may get about 30,000 miles

I like to change my tires slightly earlier than the recommended norm because I like to always know my tires have very good thread on them. So, I have already started looking at a next set of tires for my car.

These are my choices below according to importance, though from my list below, I actually prefer my second choice. Especially if during this holiday season, there is a way for me to get an extra discount on the drive out price. Then I may buy it. Then I will put my current tires which are halfway gone for sale on craigslist for a price of $150 for all 4. Willing to take $100 for all 4. Then I add money and get brand new tires all over again.

First Choice

Second Choice

Third Choice

I would rate all of those tires as garbage. May I suggest a better alternative from Simple Tire? Previous generation P7.

 

[dbourke]

Just picked up a set of Pirelli p7 AS 3 (latest generation) for the HAH and what a world of a difference they make compared to the Energy Savers they replaced. If you are looking for a smooth ride quality with only a loss of 2 MPG over the original tires, look no further!
I have been using Pirelli Cinturato p7 (first gen) on my previous car which had over 120K miles and these tires never failed me from getting flats and driving through big potholes.