1. Attachments are working again! Check out this thread for more details and to report any other bugs.

decisions on new tires

Discussion in 'Gen 3 Prius Technical Discussion' started by liteguy, Feb 9, 2011.

  1. liteguy

    liteguy New Member

    Joined:
    Apr 21, 2010
    27
    4
    0
    Location:
    oregon
    Vehicle:
    2010 Prius
    Model:
    IV
    Since the new tires went on we dolly towed the prius to Carlsbad for two weeks. The car towed like a dream except it took me two wash jobs to clean it up. Lets get back to the new tires. We have driven all sorts of roads down here from rough cement to asphalt, to I-5 70 mile per hour driving and site seeing. The tires are quiet, ride is excellent and the fuel economy is excellent. My last tank is right at 51mpg which is good for me because I don't follow many of the mileage rules. I basically just drive the car. The temps have been in the 60's with dry pavement.
    I'm very happy with the tires and would buy another set in a heart beat. Now keep in mind that after reading some of the previous posts on tread life. If the tires make a resonable life with energy savings and good ride then I will be happy. If I had really crunched the numbers in the beginning I would not have purchased the prius. I bought the car because I'm a total gear head and I love the technogly in the car.

    AJL
     
    1 person likes this.
  2. alfon

    alfon Senior Member

    Joined:
    May 17, 2009
    1,370
    270
    0
    Location:
    seaside, oregon
    Vehicle:
    2010 Prius
    Model:
    III
    Lets not forget the price per
    gallon of gas is an important
    factor.

    With gas probably going to hit
    $5 to $6/ gallon, an increase of
    2-3 MPG is going to pay for the
    extra price of a tire quite quickly.

    We have Michelin Energy Saver
    tires on our Prius, size 195X65X15.

    The gave us a least an honest 2 to maybe
    three MPG. We have nearly 35,000 miles on
    them and we should get at least another 25-35, thousand
    miles before they wear out.

    The tires are inflated to 44 PSI in all 4 (max sidewall Press.)
    They are quiet, smooth running, and worth the extra $20.00
    more per tire.

    Yes, the same fact applied today as yesterday,
    you get what you pay for....

    alfon
     
  3. ct89

    ct89 Active Member

    Joined:
    Dec 31, 2010
    323
    266
    1
    Location:
    New England
    Vehicle:
    2017 Prius Prime
    Model:
    Prime Advanced
    Very interesting spreadsheet. If anyone else keeps this level of detail it would be interesting to follow-up on F8L's point about total cost of ownership compared across various brands.

    Your Integrity and WRs didn't make it to 50K miles which is aligned with their relatively low treadware rating (460 and 420). I'm somewhat surprised that the MXV4s didn't last longer given their 620 treadware rating.

    I'm at 70K miles on my Pirelli's (treadware=760) and I have read about people easily getting over 80K with Hydroedges (treadware=800).
    Do any of the higher treadware tires pay for themselves or is LRR the bigger factor?
     
  4. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    I agree and the revolutions/mile idea never crossed my mind but there could be subtle differences that really add up over 60k miles. :)

    Here are data for some of the LRR tires I have been checking out:

    Continental ContiProContact with EcoPlus $74
    UTQG: 600 A B
    TreadDepth: 10/32
    Revs/Mile: 848
    Warranty: 80,000

    Bridgestone EP100 $73 (53.5mpg as tested)
    UTQG: 400 A B
    TreadDepth: 10/32
    Revs/Mile: 857
    Warranty: 50,000

    Michelin Energy Saver A/S $115 (53.8mpg as tested)
    UTQG: 480 A B
    TreadDepth: 9/32
    Revs/Mile: 851
    Warranty: 65,000

    Yokohama dB Super E-Spec $109 (52.8mpg as tested)
    UTQG: 460 A A
    TreadDepth: 10/32
    Revs/Mile: 848
    Warranty: None lol

    Goodyear Assurance Fuel Max $87 (51.60mpg as tested)
    UTQG: 580 A A
    TreadDepth: 10/32
    Revs/Mile: 855
    Warranty: 65,000

    Agreed but if the EP100 gets the same or better MPG than the Energy Saver A/S then the savings due to increased MPG is a wash and you still paid more for the Michelins. The only factor left that redeem the Energy Savers is treadwear life. If they last much longer than the EP100 then you have a case. :) Since we cannot compare treadwear ratings across brands, adding this factor into the equation is very difficult.

    Treadwear rating is difficult to compare across brands and as such it is hard to really say for sure how long a tire will last. I think a tire's warranty is a better gauge of longevity.

    I think unless you find a really cheap tire that performs well and has a VERY long lifespan, the LRR factor will win out. This is assuming the LRR tire is also fairly cheap at less than $80 per tire.
     
  5. oldcheme

    oldcheme New Member

    Joined:
    Mar 2, 2011
    8
    0
    0
    Location:
    Houston
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    I have about 10,000 smooth miles on Yokohama YK520's, they are quiet and seem to be wearing OK so far.
     
  6. liteguy

    liteguy New Member

    Joined:
    Apr 21, 2010
    27
    4
    0
    Location:
    oregon
    Vehicle:
    2010 Prius
    Model:
    IV
    I'm going to chime back in and talk about ride quality. I've had several tires on the car in a very short period of time by default. The stock tires were quiet and ride was fair. The nokiens wre noisy and the ride seemed rough. The michelin energy savers by far are the best in ride quality and are wisper quiet. We have been driving the Orange county freeways at 70 to 75 and the ride quality is execellent. Very impressive tire and my mpg is excellent.
    I would buy another pair in a heart beat.

    AJ
     
    1 person likes this.
  7. rrolff

    rrolff Prius Surgeon

    Joined:
    Aug 19, 2009
    1,610
    246
    0
    Location:
    So Cal
    Vehicle:
    2010 Prius
    Model:
    III
    Has anyone tried on 22"??? The tire just came out from Goodyear - and is only used on one car...
    [​IMG]
     

    Attached Files:

  8. dragonrand

    dragonrand Junior Member

    Joined:
    Nov 29, 2007
    74
    22
    0
    Location:
    Springfield, MO
    Vehicle:
    2005 Prius
    I decided a few months ago my next set would be the Michelin Energy Savers. Unfortunately, nobody seems to have them in the stock size for a Gen II and there's no telling when Michelin will do another production run. Does anyone have any tips or recommendations on where I might procure the Michelin Energy Saver A/S in the 185/65/15 stock size? If they're impossible to find, I'm back to square one.
     
  9. Mendel Leisk

    Mendel Leisk EGR Fanatic

    Joined:
    Oct 17, 2010
    56,686
    39,234
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Just looking at your options at tirerack, you are right about michelin Energy Saver availability. I would not be loyal to a brand that is not even available. How about Bridgestone EP422? There are several other LRR options too:

    Tire Search Results
     
  10. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    For the most economical choice given the unavailability of the Energy Saver A/S I would look into the Fuel Saver Max and the Continental Pro Contact with ecopia plus. Even the Kumho listed in the above link is probably a decent choice but I expect it to be louder thank the others. The warranty ratings suggest these tires will last longer thank the Ecopias.
     
  11. Den49

    Den49 Member

    Joined:
    Oct 25, 2010
    498
    268
    0
    Location:
    Maryland
    Vehicle:
    2010 Prius
    Model:
    IV
    This is an update on the Michelin Harmony tires that I installed about nine months ago. To date they have traveled 13,029 miles. The original tread depth was 11/32". Current tread depth is 10/32". At that rate of treadwear, if I run the tires down to 3/32" they will last over 100,000 miles. 100,000 miles is a realistic expectation, as I have seen Harmony's last that long on a Corolla. The tires run smooth, are quiet and have excellent traction in dry, wet, snow and ice conditions. Only negative is about a 0.5 to 1.0 mpg reduction over the OEM Yokohama tires, which I do not consider significant.
     
    2 people like this.
  12. alfon

    alfon Senior Member

    Joined:
    May 17, 2009
    1,370
    270
    0
    Location:
    seaside, oregon
    Vehicle:
    2010 Prius
    Model:
    III
    Thanks for the update.

    We are approaching 50,000 miles on our Michelin Energy Saver tires, 195x65x15. All four are inflated to 44 PSI of Costco nitrogen, where we purchased the tires.

    I believe I was the first one to buy the energy saver tires on this forum.

    I noticed an immediate 2-3 mpg over the stock Yoko Avid tires, even though they were well broken in with 10,000 miles.

    I believe I will get at least another 10,000 to maybe 20,000 miles of legal wear out of these tires.

    With the increase in mpg I have saved $144.00 in fuel cost based on $3.75 / gallon gas, with 50,000 miles and increase of mpg's from 50 to 52 mpg with the Michelin Energy tires.

    I may be wrong, but I believe I am ahead with these tires, with the extra benefit of them being a rather quiet tire.

    alfon
     
    1 person likes this.
  13. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    It's too bad you cannot purchase them anywhere.
     
    1 person likes this.
  14. Bullet220

    Bullet220 New Member

    Joined:
    Sep 7, 2011
    17
    2
    0
    Location:
    Renton, WA
    Vehicle:
    2010 Prius
    Model:
    V
    Hi All,
    Has anybody tried the Michelin Primacy MXM4 on the 17" wheel? I'd be happy to hear about your experiences. My car came with the Michelin Pilot MXM4 tires, and are doing great after 32k miles. Though it looks like the Pilot tires may be on close-out in some places. Any idea if the Primacy is going to replace the Pilot?

    Thanks!
     
  15. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Yes I do and yes the Primacy is loosely considered the replacement for the Pilot. Click the link in my sig for a review. Despite the mpg drop I really like them.
     
  16. Bullet220

    Bullet220 New Member

    Joined:
    Sep 7, 2011
    17
    2
    0
    Location:
    Renton, WA
    Vehicle:
    2010 Prius
    Model:
    V
    Thanks for pointing me in the right direction. I thought you did a nice write up on the Primacy tires.
     
  17. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Thanks. :) The whole point is to help others make they best decision they can.

    AfterPutting a few thousand miles on them I would categorize them as smooth, quiet and nimble. They cannot hold a hard corner quite as well as the Kumho ecsta ASX but they have more than enough grip for spirited driving. I just wanted a smooth tire that was comfortable to drive and Michelin delivered.

    I just noticed your are from Renton. These tires are rated for excellent wet braking distance so I think they will be perfect for your climate. Especially with all the rude nutjobs on the roads up there. I lived in Marysville and Everett for 2 years.
     
  18. Bullet220

    Bullet220 New Member

    Joined:
    Sep 7, 2011
    17
    2
    0
    Location:
    Renton, WA
    Vehicle:
    2010 Prius
    Model:
    V
    I'm definitely looking for quiet, the other two characteristics you mentioned are bonus features.
    I don't have a long commute, but I will enjoy driving into town with the added confidence of the improved wet braking. I noticed on the Michelin web site that they even rate them higher than the Pilots (in almost all categories) that they seem to be replacing. And they have them for sale at Costco, so that's another plus for me.
    Thanks for the information!
     
  19. F8L

    F8L Protecting Habitat & AG Lands

    Joined:
    Aug 14, 2006
    19,011
    4,081
    50
    Location:
    Grass Valley, CA.
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Glad I could help you out. :)