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Do Tires make a Big Diff. in MPG ?

Old 06-02-2012, 07:52 AM
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Join Date: Nov 2011
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Arrow Do Tires make a Big Diff. in MPG ?

I just noticed that the tires on my escape hybrid are M+S ... driving in normal weather they seems very noisy and i know the more grippy and big the tread is, the worst mpg it is . Is it worth it to buy a second set of tires that are performanced geared for the summer ? would it make that much of a difference?
Old 01-03-2013, 02:00 PM
Join Date: Jan 2013
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Default Re: Do Tires make a Big Diff. in MPG ?

Firestone sells tires for hybrid vehicles purpose. You may want to ask them.
Old 01-05-2013, 09:14 PM
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Default Re: Do Tires make a Big Diff. in MPG ?

A Hybrid vehicle (in particular) isn't at all like your grampa's old pickup back in the 70s. "Pimping out" a hybrid is absolutely stupid, even more so than most other vehicles. Any hybrid vehicle was designed to have certain tires, and it's easy to find out those specifications.

A more direct answer: YES!!!! Tires do in fact make a very substantial difference in vehicle MPG. Pressurization, size, design, tread pattern, mounting, and state of wear all matter. Tires MAY even make more difference than fuel!

Go to tirerack.com and spend a few hours learning about tires. There are other websites too, but I haven't seen a better one than tirerack for learning a lot about tires.
Old 02-12-2013, 03:32 PM
Join Date: Feb 2013
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Default Re: Do Tires make a Big Diff. in MPG ?

Originally Posted by 02viperacr View Post
would it make that much of a difference?
Back in '08, I had an '05 Prius and I decided to change the tires out. The instant that I switched from the stock tires to the new set (generic firestones, I think), I lost about 4mpg on average, or about 10%.

So I'd say that the effect is definitely not insignificant.

Smooth sailing,
Old 03-06-2013, 10:32 PM
Civic Duty's Avatar
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Default Re: Do Tires make a Big Diff. in MPG ?

I second that. I switched all four OEM Dunlop tires to Michelin X-Radial in 2009 (after 4 years on Dunlops and 1 scary blow-out at highway speeds) and immediately lost about 5 MPG (49 -> 43 or so, so again about 10%). The X-Radial are not "hybrid" tires but they are supposed to be pretty low rolling resistance. I was amazing what a hit my MPG took. Then it got even worse when I moved into a city and take only relatively short commutes with lots of traffic.

I will say that the overall ride quality and road noise improved slightly when I got the Michelins. They still have some tread left and I am debating whether to go for some super-LRR "hybrid" tires again when these go.
Old 04-09-2013, 08:00 PM
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Default Re: Do Tires make a Big Diff. in MPG ?

I'm on my 3rd set of Dunlops set to 50PSI. Tires do make a difference and I gain 5-7MPG with high inflation. A bit hard on the behind though. I've just crossed 250,000 miles and those extra MPG's really add up.
Old 04-18-2013, 08:10 AM
Join Date: Dec 2004
Location: Leominster, MA
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Default Re: Do Tires make a Big Diff. in MPG ?

You only went through 3 sets of tires in 250,000 miles? I'm about 100K miles behind you and I'm on my third set already. Technically my fourth because I just bought some Michelin Defenders - they seemed the best decent LRR available. I've always called the Dunlops a death trap but that was just me overexagerating as they really aren't that bad. I wanted a slightly better tire than the dunlops and with a 90K warranty on the tires I should be good to go for a whlie.

My previous tires probably would have lasted a bit longer, but I was lazy and let the psi drop to about 45.

The good news with the defenders is I get the same mileage as with the dunlops. That is with winter gas I get about 52 mpg. I'll have to let you know in a few weeks when we go to summer gas.
Old 09-08-2013, 03:29 PM
Join Date: Jul 2013
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Default Re: Do Tires make a Big Diff. in MPG ?

I am about to buy tires - now have 48000 on the original toyota tires. Not nearly enough. But, i have been running them in the low 30's psi range (pr mfgr. recommendation). I have had edge tread wear due to underinflation per the dealership. So now have them at 45psi and will try 50 . Are their any safety issues? Thanks in advance for any info.
Phx jim
Old 09-08-2013, 05:05 PM
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Default Re: Do Tires make a Big Diff. in MPG ?

Your tires should have a maximum COLD inflation pressure on the side wall of the tire. As long as you run that pressure or less, you should be OK.
Old 10-23-2013, 07:09 AM
Join Date: Oct 2013
Posts: 3
Default Re: Do Tires make a Big Diff. in MPG ?

Question in this regard: I replaced my 2011 Insight's tires with Tracmax 175/65/15 radial 102 this morning and am wondering if it was a good move. Any ideas? I am worried they may not be LRR, but do not know how to tell..

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