New tires, less gas mileage?

[mwr]

I recently replaced the worn tires on my 2015 FFH with exactly the same tires (Michelin Energy Saver A/S - P225/50R17 93V). I immediately noticed a drop in gas mileage of 2 mpg or more. Have others noticed this?

 

Remembering back a bit, my gas mileage used to be more like what I'm getting now, but in the last year (less?) my gas mileage increased by 2 mpg or more. Therefore it makes perfect sense that after installing new tires, the mileage would drop back to its "old" numbers.

[murphy]

It takes about 500 miles to break in a new set of tires.

 

https://www.tirerack.com/tires/tiretech/techpage.jsp?techid=5

[Texasota]

I recently replaced the worn tires on my 2015 FFH with exactly the same tires (Michelin Energy Saver A/S - P225/50R17 93V). I immediately noticed a drop in gas mileage of 2 mpg or more. Have others noticed this?

 

Remembering back a bit, my gas mileage used to be more like what I'm getting now, but in the last year (less?) my gas mileage increased by 2 mpg or more. Therefore it makes perfect sense that after installing new tires, the mileage would drop back to its "old" numbers.

Mwr, please give another update after you accumulate 500+ miles on your new Michelin tires. I am not far behind you in needing new tires for my 2015. I have been very happy with the original Michelin tires.

[mwr]

Mwr, please give another update after you accumulate 500+ miles on your new Michelin tires. I am not far behind you in needing new tires for my 2015. I have been very happy with the original Michelin tires.

I have 500 miles+ on the tires, but our weather has been very hot (100+) instead of moderate recently so the gas mileage has dropped because of all the AC use. I "get" that the tires need a 500 mile "break in" period, but I don't at all know that's the cause of lower gas mileage with the new tires. I'm going to guess that it's not, and that the lower mileage will continue until the tires are quite worn. As I said, my memory is that I got lower mileage (but still great) until fairly recently (the last year?) when it jumped up, only to drop back with the new tires.

[ptjones]

On my third set of Michelin's and I didn't notice much difference, at one mile per gallon difference it would be hard to know for sure. I have read that less tread = better MPG's, less resistance and you would be going slightly slower, less drag. What about tire pressure?

 

Paul

[mwr]

On my third set of Michelin's and I didn't notice much difference, at one mile per gallon difference it would be hard to know for sure. I have read that less tread = better MPG's, less resistance and you would be going slightly slower, less drag. What about tire pressure?

 

Paul

42 psi before and after the new tires.

[md13ffhguy]

On my third set of Michelin's and I didn't notice much difference, at one mile per gallon difference it would be hard to know for sure. I have read that less tread = better MPG's, less resistance and you would be going slightly slower, less drag. What about tire pressure?

 

Paul

OMG, please don't start proselytizing about 50 psi again...

[Timewellspent]

On my third set of Michelin's

 

Paul

 

What is your total mileage?

[md13ffhguy]

On my 2013 and my wife's 2014, we replaced the original Michelin tires at 87k and 86k. Great tires. She's now running with Continental PureContacts and I'm back with Michelin OEM replacements. More on that later.

[ptjones]

 

What is your total mileage?

I currently have 164k miles on my car. A little info on Michelin OEM tires, they are warrantied for 55k mi., rated for 51 max psi cold and could stand up to around 200 psi. before exploding. :) I actually called and talked to a Customer Support Rep., I explained that I was using 50psi and was getting even tire ware. He said he would recommend 50psi cold tire pressure if I was getting even tire wear. :) Many members are using 48-51psi in their tires with no complaints. BTW my Michelin's weren't worn out at 64k mi., but I was going to be doing Winter driving and wanted to have as much tread as possible. Could have gone 5-10k mi. more anyways .

 

On my 2013 and my wife's 2014, we replaced the original Michelin tires at 87k and 86k. Great tires. She's now running with Continental PureContacts and I'm back with Michelin OEM replacements. More on that later.

What's the difference in gas mileage?

 

Paul