Lost 5 mpg when replacing Integrity tires with Hydroedge

pardreamer · 10-07-2009, 04:29 PM

I replaced the Integrity after 63,000 miles. There were a lot of tread left but the problem was tire wear was uneven and there was too much noise. I replaced them with the Hydroedge tires and had alignment done. The Hydroedge tires provide better ride and grip, and are more quiet. However, I used to get 55 MPG and now suddenly it is 50 MPG. I hate to see the mileage number in the high 40s but I guess ride comfort and better road grip cost something.

**efusco** · 10-07-2009, 04:39 PM

It takes about 2000 miles or so for the Hydroedge to break in. You'll still get slightly worse mileage with them, but pump them up to at least 44f/42r (I use 50psi all around, but the ride can be harsh) and give it some time. I've been on my Hydroedge for ~65k miles now and have seen a tank as high as 76.1mpg, so big numbers are quite doable.

PriusLewis · 10-07-2009, 04:43 PM

It's interesting that any brand of tire has to "wear in" before giving their best mileage. I changed to Falken ZE-912's, and it took a few thousand miles before I was back up to about where I was with the Bridgestones (plus better ride, handling, and quieter).

neilz · 10-07-2009, 05:05 PM

Quote:

Originally Posted by PriusLewis

It's interesting that any brand of tire has to "wear in" before giving their best mileage. I changed to Falken ZE-912's, and it took a few thousand miles before I was back up to about where I was with the Bridgestones (plus better ride, handling, and quieter).

Does that mean that I will also get better mileage from my Prius after the Yokohama tires break in?

ken1784 · 10-07-2009, 05:08 PM

There are a lot of factors you see worse mileage with new tires.
- The well worn tire's diameter became small, then you saw better mileage.
- The well worn tire's rolling resistance became small, then you saw better mileage.
- As others wrote, the new tires need to break in.

Also, temperature is getting colder.

Ken@Japan

JimboK · 10-07-2009, 07:17 PM

My experience was similar; I estimated a 5-10% loss. Much of it has been made up now that I have 35K miles on the Hydroedges.

PriusLewis · 10-07-2009, 10:54 PM

Quote:

Originally Posted by neilz

Does that mean that I will also get better mileage from my Prius after the Yokohama tires break in?

That is the consistent opinion here - they certainly should.

daniel · 10-08-2009, 11:00 AM

I'd say it's worth a slight reduction in mpg for the increased safety of better tires!

richard schumacher · 10-08-2009, 11:08 AM

They will probably never be as good as the Integrities. Integrities may be noisy, not wear very well and have mediocre wet traction, but they allow very good fuel economy and dry traction.

See TireRack.com for a comparison of fuel economy tire tests conducted on a Prius. Using their results, in my warm climate I will replace my Integrities with GY Assurance FuelMax.

Neena2007 · 10-09-2009, 07:11 PM

Quote:

Originally Posted by PriusLewis

That is the consistent opinion here - they certainly should.

i agree... the yokohamas on mine are getting better. i have about 2500 miles on them.

10-07-2009, 04:29 PM	#1
pardreamer Member Join Date: Jan 2008 Location: San Diego Posts: 42 My Car: 2008 Prius Model: Package: #2 Thanks: 2 Thanked 0 Times in 0 Posts Friends: 0	Lost 5 mpg when replacing Integrity tires with Hydroedge I replaced the Integrity after 63,000 miles. There were a lot of tread left but the problem was tire wear was uneven and there was too much noise. I replaced them with the Hydroedge tires and had alignment done. The Hydroedge tires provide better ride and grip, and are more quiet. However, I used to get 55 MPG and now suddenly it is 50 MPG. I hate to see the mileage number in the high 40s but I guess ride comfort and better road grip cost something.

10-07-2009, 04:39 PM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,252 My Car: 2004 Prius Model: Package: #9 Thanks: 50 Thanked 262 Times in 157 Posts Friends: 37	Re: Lost 5 mpg when replacing Integrity tires with Hydroedge It takes about 2000 miles or so for the Hydroedge to break in. You'll still get slightly worse mileage with them, but pump them up to at least 44f/42r (I use 50psi all around, but the ride can be harsh) and give it some time. I've been on my Hydroedge for ~65k miles now and have seen a tank as high as 76.1mpg, so big numbers are quite doable.

10-07-2009, 04:43 PM	#3
PriusLewis Management Scientist Join Date: Feb 2009 Location: Denver Metro Posts: 655 My Car: 2006 Prius Model: N/A Package: #2 Thanks: 91 Thanked 43 Times in 36 Posts Friends: 5	Re: Lost 5 mpg when replacing Integrity tires with Hydroedge It's interesting that any brand of tire has to "wear in" before giving their best mileage. I changed to Falken ZE-912's, and it took a few thousand miles before I was back up to about where I was with the Bridgestones (plus better ride, handling, and quieter).

10-07-2009, 05:08 PM	#5
ken1784 SuperMID designer Join Date: Dec 2003 Location: Yokohama, JAPAN Posts: 1,999 My Car: 2010 Prius Model: N/A Package: G Thanks: 11 Thanked 277 Times in 128 Posts Friends: 8	Re: Lost 5 mpg when replacing Integrity tires with Hydroedge There are a lot of factors you see worse mileage with new tires. - The well worn tire's diameter became small, then you saw better mileage. - The well worn tire's rolling resistance became small, then you saw better mileage. - As others wrote, the new tires need to break in. Also, temperature is getting colder. Ken@Japan

10-07-2009, 07:17 PM	#6
JimboK One owner, low mileage Join Date: May 2006 Location: Chesterfield, VA Posts: 2,553 My Car: 2005 Prius Model: Package: #2 Thanks: 4 Thanked 104 Times in 72 Posts Friends: 6	Re: Lost 5 mpg when replacing Integrity tires with Hydroedge My experience was similar; I estimated a 5-10% loss. Much of it has been made up now that I have 35K miles on the Hydroedges.

10-08-2009, 11:00 AM	#8
daniel Cat Lovers Against the Bomb Join Date: Feb 2004 Location: Spokane, WA Posts: 11,278 My Car: 2004 Prius Model: Package: #6 Thanks: 59 Thanked 201 Times in 127 Posts Friends: 0	Re: Lost 5 mpg when replacing Integrity tires with Hydroedge I'd say it's worth a slight reduction in mpg for the increased safety of better tires!

10-08-2009, 11:08 AM	#9
richard schumacher Destination: Eschaton Join Date: Mar 2004 Location: United States Posts: 5,515 My Car: 2004 Prius Model: N/A Package: #6 Thanks: 100 Thanked 93 Times in 66 Posts Friends: 0	Re: Lost 5 mpg when replacing Integrity tires with Hydroedge They will probably never be as good as the Integrities. Integrities may be noisy, not wear very well and have mediocre wet traction, but they allow very good fuel economy and dry traction. See TireRack.com for a comparison of fuel economy tire tests conducted on a Prius. Using their results, in my warm climate I will replace my Integrities with GY Assurance FuelMax.

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