Nw LRR tires but they set to 35 psi?

Discussion in 'Gen 3 Prius Main Forum' started by Jim Caldwell, Sep 14, 2019.

Page 4 of 4
  1. William Redoubt

    William Redoubt Senior Member

    Joined:
    Feb 13, 2016
    1,215
    1,165
    1
    Location:
    Coronado Island, California
    Vehicle:
    2016 Prius
    Model:
    Two
    I run my tires at 40. Difference between 35 and 40 psi is 6 miles per gallon. I have tested it many times.
     
    #61 William Redoubt, Sep 25, 2019
    Robert Holt and Grit like this.
  2. William Redoubt

    William Redoubt Senior Member

    Joined:
    Feb 13, 2016
    1,215
    1,165
    1
    Location:
    Coronado Island, California
    Vehicle:
    2016 Prius
    Model:
    Two
    I have been shorting Tesla and Diminishing Returns for years and making a boat load.
     
    #62 William Redoubt, Sep 25, 2019
    Grit likes this.
  3. William Redoubt

    William Redoubt Senior Member

    Joined:
    Feb 13, 2016
    1,215
    1,165
    1
    Location:
    Coronado Island, California
    Vehicle:
    2016 Prius
    Model:
    Two
    I am so sick of this type of comment. Anecdotes are VERY MEANINGFUL. In fact, every court in the world recognizes them per the well-known attorney Lionel Hutz: "While anecdotes, hearsay and conjecture may not be the best evidence, they are kinds of evidence." Just take a minute and look up Mr. Hutz's credentials.

    No study proves anything 100 percent. But an anecdote? By itself, taken alone with out other testing or sampling, is 100 percent accurate. And, when enhanced by smoking LEGAL CANNABIS (in the west-coast sun), is over 100-percent accurate.

    Take that Boston-boy! :)
     
    #63 William Redoubt, Sep 25, 2019
    Ed Beaty and bisco like this.
  4. lenjack

    lenjack Active Member

    Joined:
    Dec 1, 2006
    804
    114
    0
    Location:
    Pennsylvania USA
    Vehicle:
    2010 Prius
    Model:
    III
    Carmakers recommendation is for softer, more comfy ride. Upping it 3 to 5 pounds will give you better mileage, AND better handling, while the hardening of the ride will be barely noticeable. I have not found this to cause added tire wear.
     
    #64 lenjack, Sep 29, 2019
    Threej likes this.
  5. Mendel Leisk

    Mendel Leisk Witness Leader

    Joined:
    Oct 17, 2010
    57,113
    39,435
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Walk yurself down to Pep Boys or whoever, get a $5 tread depth gauge. (y)
     
    #65 Mendel Leisk, Sep 29, 2019
  6. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,557
    10,327
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Even once a month was too fast. That sounds more like a small bead or valve leak, than permeation through the rubber, so all-nitrogen won't help.
    Comfort is very clearly a factor, and is likely why numerous previous-century cars had too-low pressure recommendations. E.g. my household's Honda and Acura suffered premature edge wear and hydroplaning until I upped the pressures. And the infamous Ford Explorer / Firestone rollovers, which killed a lot of people, which caused in part (along with a half dozen other problems) by a too-low manufacturer pressure recommendation.

    But I'm betting that upping the pressure 3-5 pounds will be more that 'barely noticeable' by numerous drivers and riders. While fine for me, a fair number of others won't like it.
     
    #66 fuzzy1, Sep 29, 2019
    Last edited: Sep 29, 2019
  7. fuzzy1

    fuzzy1 Senior Member

    Joined:
    Feb 26, 2009
    17,557
    10,327
    90
    Location:
    Western Washington
    Vehicle:
    Other Hybrid
    Model:
    N/A
    Many have done so or similar. Search around, here are just a few examples.

    NHTSA:
    upload_2019-9-29_11-7-3.png


    A university engineering department:
    upload_2019-9-29_11-10-17.png
    An engineering calculator source:
    upload_2019-9-29_11-15-32.png

    A bicycle-specific test:
    upload_2019-9-29_11-12-18.png
     
    #67 fuzzy1, Sep 29, 2019
    CR94 and Robert Holt like this.
  8. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,452
    50,202
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    sorry, i meant prius specific with LRR tires
     
    #68 bisco, Sep 29, 2019
  9. NewHybridOwner

    NewHybridOwner Active Member

    Joined:
    Nov 21, 2018
    607
    282
    0
    Location:
    W. Michigan
    Vehicle:
    2015 Prius
    Model:
    Four
    If the factory-installed tires were LRR (were they on yours?), wouldn't the specified 35psi on the label be for LRR tires rather than for "regular" tires?
     
    #69 NewHybridOwner, Sep 30, 2019
    Mendel Leisk likes this.
  10. CR94

    CR94 Senior Member

    Joined:
    Dec 2, 2014
    2,642
    1,140
    0
    Location:
    Northwestern S.C.
    Vehicle:
    2011 Prius
    Model:
    Two
    You can be certain Toyota (among others) tested that too.
     
    #70 CR94, Oct 2, 2019
  11. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    110,452
    50,202
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    no doubt
     
    #71 bisco, Oct 3, 2019
(You must log in or sign up to post here.)
Page 4 of 4