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Factory tires on ORP?

Discussion in '5th Gen 4Runners (2010-2024)' started by rmiked, Mar 10, 2023.

  1. Mar 12, 2023 at 10:24 PM
    #31
    kmeeg

    kmeeg New Member

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    Thought of doing a little math on paper. (I did it quickly I might have made a mistake.)
    Looks like a;

    32.7in 285/70R17 would have 2832.27 sq inch area
    33in 255/80R17 would have 2750.43 sq inch area

    If you take a 33in 285/70R17 would have 2873.8 sq inch of area
    Vs a 32.8in 255/80R17 would have 2723.46 sq inch of area.

    Again how much of that touches the ground at different psi is still a question. But given the side wall height looks pretty close.

    This is just a bed time math so excuse me if I made a mistake.

    I was also thinking 285/70R17 would have better handling the tire been more square weight distributed at a wider area vs a 255/80R17 tire been a more rectangle shape? Not sure. May be that's why 255/80R17 only have Load E vs 285/70R17 can go soft as Standard load? Just thinking to my self.

    Again this is just for math fun I did. Would be so cool if we could do a test and share the details for the group. But if would be a pain I guess as 2 modified 4runners will have very different weights. And then jack them up, paint and print of paper to measure area.

    Edit-
    Just woke up to remember I need to deduct the side area. Could have kept it simple as 2πrh. H been 11.22 vs 10.03. I think proportionally 285/70R17 may have higher area. Will try to calculate if I’m in a mood to do again. :D:D
     
    Last edited: Mar 12, 2023
  2. Mar 12, 2023 at 10:27 PM
    #32
    Foothills

    Foothills New Member

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    Vehicle manufacturer supplied tires are often not the same as what you could buy at a tire shop even though they have the same name and model. Expect less tread depth, lesser quality rubber compound and less plys and other reduced contruction and why most owner take them off sometimes at pre-delivery. Get a written tire warranty from the dealership if you plan on keeping them on the truck.
     
  3. Mar 12, 2023 at 11:03 PM
    #33
    Jedi5150

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    Kmeeg, I could be mistaken but I believe that the reason most 255/80R17s and 255/85R16’s primarily come in an E Load is because they were intended to be used on duallies. They want a skinny tire for the four rear tires, and the purpose of a dually is to carry heavy loads, hence the E Load design.

    And keep in mind that there are many tire sizes narrower than 255 that come in lighter/ standard load ranges.
     
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  4. Mar 13, 2023 at 2:40 AM
    #34
    Thatbassguy

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    The actual contact patch is only a small percentage of the circumference, though, so this is inaccurate.
     
  5. Mar 13, 2023 at 2:58 AM
    #35
    Thatbassguy

    Thatbassguy New member? Really??

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    I can't imagine they could cheap out too much. Tires are a very important part of vehicle safety.

    In the case of the Dunlops, those are just not good in snow altogether.
     
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  6. Mar 13, 2023 at 3:48 AM
    #36
    Foothills

    Foothills New Member

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    Here's what one Toyota dealership posts on their website about vehicle manufacturer supplied 'factory' tires, didn't want to bore anyone with several hundred other sites with the same information.
    https://www.earlstewarttoyota.com/your-new-cars-tires-wont-last-long/
     
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  7. Mar 13, 2023 at 5:48 AM
    #37
    Thatbassguy

    Thatbassguy New member? Really??

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    I don't see anything in that article about manufacturers using tires that are labeled the same but manufactured to different specs than what you would buy at a tire dealer. All it says is that they would use tires with softer rubber compound.

    It says nothing about using less plies, or less tread depth, both of which I think would be extremely irresponsible on the manufacturers part.

    Either way, the Dunlap Grand Trek is notoriously shitty in the snow, no matter where you buy it from.
     
    Last edited: Mar 13, 2023
  8. Mar 13, 2023 at 6:23 AM
    #38
    Spare Parts

    Spare Parts New Member

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    They just use a softer compound to make the test drive better. Been that way for a long time.
     
  9. Mar 13, 2023 at 9:02 AM
    #39
    mainerunr

    mainerunr New Member

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    What sliders are those?

    And your experience is exactly what I was trying to avoid in having the stock tires switched before I picked mine up at the dealer. Noplace to store an extra set of tires right now either...
     
  10. Mar 13, 2023 at 9:39 AM
    #40
    kmeeg

    kmeeg New Member

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    Did a little more math for fun today while working.
    So looks like 255/80 has 0.17in more sidewall.

    The total area of 285/70 is 1152.9 sq inch vs 255/80 got 1042.7 sq inch area. Have to think on calculating the lines of area touching the road.

    I would assume 285 would have more contact area. Then we would have to go into rabbit hole of calculating force needed to push on a sand / snow area so the 285s will float more with weight distributed at a wider area vs 255s will sink more with more weight on a narrow area.

    Again this is just for math fun. I could be wrong by missing a critical factor.

    20230314_091723.jpg
     
    Last edited: Mar 14, 2023
  11. Mar 13, 2023 at 11:51 AM
    #41
    Foothills

    Foothills New Member

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    Here's a brief explanation of what oem factory homologated tires are, rubber compound is just one parameter modified when oem specifies a tire for their vehicle use, been that way for many years;
    https://www.blackcircles.ca/en/faq/tires/homologated-tires
     
  12. Mar 13, 2023 at 12:18 PM
    #42
    mainerunr

    mainerunr New Member

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    Look at the factory tires on the Bronco Sasquatch, nothing in that size even close in weight...(and word is they throw rocks like a 9yr old baseball player, every chance they get)...at least they don't say 'Wrangler' anywhere on them though...
     
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  13. Mar 13, 2023 at 1:25 PM
    #43
    Thatbassguy

    Thatbassguy New member? Really??

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    Well that certainly explains it better. I'm kind of surprised they would manufacture the same tire to different specs, rather than just coming up with a specific model name.



    I read this about the 35s they're putting on the Bronco. But, I thought that I had read that it does say Wrangler somewhere on the tire, but it's very small. I could be mistaken though.
     
  14. Mar 13, 2023 at 5:21 PM
    #44
    Spare Parts

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    https://www.4xinnovations.com/2010--2023-4Runner-Bolt-On-Rock-Slider_p_157.html

    This is the first time I’ve had an extra set of wheels, I’ll run the factories until they are junk, then I’ll set up both sets, I’m thinking of using the O.R. rims for the “off road” tires and the pros for highway.
     
  15. Mar 13, 2023 at 5:48 PM
    #45
    Trail Runnah

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    So multiple reviews of the newer Tundra and Sequoia TRD Pros mentioned this exact thing. They come with Falken Wildpeak AT3s, but apparently they're a Toyota spec version that has a slightly less aggressive and shallower tread. They all complain about it, saying basically come on Toyota, just give us the good tires.

    I guess from the tire manufacturers point of view, knowing that they're going to sell hundreds of thousands of these to the manufacturer, it makes sense to do a specific version for them. I've heard of Michelin doing specific versions for Corvette and Porsche as well.
     
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  16. Mar 13, 2023 at 5:56 PM
    #46
    Thatbassguy

    Thatbassguy New member? Really??

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    There was a later post with a link to a more informative article. It's interesting, for sure.

    But, I'm still convinced that the Dunlops are just bad in snow, all around.
     
  17. Mar 13, 2023 at 6:05 PM
    #47
    Trail Runnah

    Trail Runnah New Member

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    I never had the Dunlops, but the Duelers are definitely terrible in snow. The dunlops look like a terrible tire, Toyota should be ashamed of putting that on a model with "off-road" in its name.
     
  18. Mar 13, 2023 at 6:24 PM
    #48
    Thatbassguy

    Thatbassguy New member? Really??

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    Agreed! I think I would have kept the Dunlops for awhile if I lived in a warm climate. But, after nearly wiping out on the freeway 2 weeks into a brand new vehicle, I got rid of them with 1300 miles.
     
    Last edited: Mar 14, 2023
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  19. Mar 14, 2023 at 4:24 AM
    #49
    rmiked

    rmiked [OP] New Member

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    My new ORP should be here within 2 weeks. I am new to 4 Runners from Tacomas. Regarding tire capability, the OE tires on the Tacoma TRDOR are Goodyear Wrangler with Kevlar. Those tires are very good quality and very good traction for rocks, sand, gravel. Not as good in mud or wet conditions. However, a very respectable off road tire. I realize the 4 Runner is as good (if not better) off road with the additional ATRAC feature (not on Tacoma), 4WD Hi MTS (mud setting only) and slightly higher ground clearance (9.6” bs 9.4) and better approach and departure angles. But they install inferior tires on a 4 Runner off-road model not consistent with the Tacoma ? Very confusing? I mean it’s almost as if Mike Scheers’s (Chief Engr) team produces the great 4 Runner platform but doesn’t believe the customers actually use the 4 Runner off road? Or they think their customers modify their 4 Runners so much more than Tacomas that there is no sense in providing a good quality off- road tire as OE? I don’t believe the latter because I see so many modded Tacomas just like 4 Runners. Anyway, I prefer to keep the suspension stock and don’t alter the driveline geometry. But I would much prefer the Goodyear Wranglers with Kevlar over what seems to be provided as OE on 4 Runner.
     
  20. Mar 14, 2023 at 4:55 AM
    #50
    mainerunr

    mainerunr New Member

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    P-rated versions of most tires are slightly less aggressive and have less tread depth than the LT version. If you look at the specs for our stock size, p-rated is 13/32 while LT is 17/32, that's 1/8" difference. (There's a few reasons I went with the LT Toyos and not the p-rated....)

    In the case of the Tundra, 285/65R18 isn't even listed on Falkens size chart on their website and on Tire Rack it has very few specs listed...but the LT285/65R18 is listed on Falken's website and on Tire Rack. And I would note there is a 20lb difference in weight according to Tire Rack (one of the few specs they have for the non-LT tire)...I guarantee that is to help mpg.
     
  21. Mar 14, 2023 at 5:07 AM
    #51
    Spare Parts

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    I wonder if squeezing out every bit of fuel mileage has something to do with the tire choice on the runners.
     
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  22. Mar 16, 2023 at 5:07 PM
    #52
    rmiked

    rmiked [OP] New Member

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    I visited my dealer today and saw a Lime Green ORP. It had the Dueler HT tires on it which is likely what I’m getting next week on mine (supposed to arrive Friday). Man those tires look awful for off-roading! They are called “all season “ tires claiming good traction wet or dry. That claim has to be on pavement. I can’t understand why the Tacoma TRDOR has the Goodyear Wrangle (with Kevlar) tires and the 4 Runner ORP has Highway tires for pavement only? Very confusing. I can’t possibly drive on the logging roads where I hunt , especially after rain. So I will be getting some Goodyear Duratracs this Summer. Is there a market for selling these Dueler HTs , taken off a new ORP?
     
  23. Mar 16, 2023 at 5:42 PM
    #53
    Jedi5150

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    This is a good guess. It wouldn't surprise me at all if that were part of the reason. I also think that another reason is simply because they're cheap. The 4Runner has no problems in regard to sales. Not only does it sell for more than a Taco, but they can't keep them in stock, whereas it is not difficult at all to find brand new Tacos. In other words, why would Toyota need to spend more money on better tires to make the 4Runner more appealing, when the last thing they need in the world is for it to be more appealing. :D:p
     
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  24. Mar 16, 2023 at 5:47 PM
    #54
    rmiked

    rmiked [OP] New Member

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    All good points. What do people do with the tires they remove? I’ll never use them once removed. I doubt there is much market for this size ? But who knows?
     
  25. Mar 16, 2023 at 5:50 PM
    #55
    Jedi5150

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    I sold mine on facebook marketplace, along with the million other sets from 4Runner owners who sell them with less than 100 miles on them. lol Unfortunately, since so many people do it, they don't sell for much. I think mine went for $300? I honestly can't remember, but it was around that. As for the size, it seems to be very popular, just not among people upgrading their 4Runners.
     
  26. Mar 16, 2023 at 5:54 PM
    #56
    kmeeg

    kmeeg New Member

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    All my 4Runner stock tires were sold when they are new / very few hundred miles. Including tires on TRD Pro.
    Base line would be $100 per tire. So about $500 for 5 tires when 4R is new. I generally sell them on FB Market place.
     
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  27. Mar 16, 2023 at 7:16 PM
    #57
    Thatbassguy

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    Duratracs are good for snow and mud, but definitely not one of the best all around tires anymore.

    You can sell the old tires. You just won't get a whole lot for them.
     
  28. Mar 20, 2023 at 5:43 AM
    #58
    5six

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    I traded mine in with a 100 miles on it, only got 300 total … but that included the tire on my spare as well.
     
  29. Mar 20, 2023 at 5:51 AM
    #59
    Sailormilan2

    Sailormilan2 New Member

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    Those are the tires my 2020 ORP came with. I got into some wet grass, parked at a slight downhill angle, and it couldn't back up the hill. Tires got ditched for Geolanders.
     
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  30. Jul 27, 2023 at 11:44 AM
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    kmeeg

    kmeeg New Member

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    See this video where it proves that in real world my math is wrong-

    https://youtu.be/6wAJAOxh8LE
     

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