1. Welcome to 4Runners.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Max tire size without regearing?

Discussion in '5th Gen 4Runners (2010+)' started by Shnook718, Sep 15, 2020 at 9:44 AM.

  1. Sep 15, 2020 at 9:44 AM
    #1
    Shnook718

    Shnook718 [OP] New Member

    Joined:
    Sep 9, 2014
    Member:
    #257
    Messages:
    52
    First Name:
    shaun
    NorCal
    Vehicle:
    4runner
    What is the max tire size we can get away with before regearing?
     
  2. Sep 15, 2020 at 10:07 AM
    #2
    Thatbassguy

    Thatbassguy New member? Really??

    Joined:
    Mar 27, 2019
    Member:
    #9314
    Messages:
    2,760
    Gender:
    Male
    First Name:
    James
    S/E Wisconsin
    Vehicle:
    2019 TRDORP, KDSS, MGM
    RSG sliders, Yakima offgrid basket, Pro-Comp wheels, SOS Streamline bumper and skids, Warn VR EVO10S winch + Ultimate Sidewinder, Bilstein 6112 + 5100 + rear lift coils, Rigid Dually SS ditch lights w/Caliraised brackets and OEM style dash switch
    That's going to depend on how you drive, to an extent. I'm on 33's and totally fine. Others aren't even satisfied with acceleration on stock tires.

    Any increase in size will increase wear. I will probably regear if i go any bigger than 33".
     
  3. Sep 15, 2020 at 11:53 AM
    #3
    Oldtoyotaguy

    Oldtoyotaguy Not a new member

    Joined:
    Sep 21, 2018
    Member:
    #7224
    Messages:
    1,172
    Gender:
    Male
    Vehicle:
    2018 Toyota 4 Runner Offroad
    For sure, as Thatbassguy says, we all have different opinions about performance. It’s such a personal choice. But ask yourself this: if you had tested your 4 Runner and the front tires rubbed, and you had to remove mud flaps and melt inner fenders to fix it, and it accelerated like it was pulling a heavy trailer, would you have bought it like that?
    Probably the limit you ask about is one size up, but I get it, 285s look cool. Maybe 295s are even cooler. So, I know that if I planned on doing any trailering or carrying any loads, along with 285s, I’d regear for sure. Not only would I get better performance, but the engine and transmission would be a lot happier as well. If you want to see this in action, there’s a cool you tube video on the Tacoma Beast channel where an overland Tacoma regeared to 5.29 drag races a stock Tacoma. I think the stock Tacoma wins. Watch it, and you’ll get the idea. If he hadn’t regeared a little kid on a tricycle probably would beat him across the line.
     
    Shnook718 [OP] likes this.
  4. Sep 15, 2020 at 11:53 AM
    #4
    Chris In Milwaukee

    Chris In Milwaukee New Member

    Joined:
    Oct 3, 2019
    Member:
    #11536
    Messages:
    276
    Gender:
    Male
    First Name:
    Chris
    Vehicle:
    2019 4Runner TRD Off Road Premium, Magnetic Grey Metallic
    That and if you pull stuff, I imagine. Some thought-provoking ideas here:

    https://trail4runner.com/2019/07/18/regearing-4-56-gears-5th-gen-4runner-review/
     
  5. Sep 15, 2020 at 12:11 PM
    #5
    Thatbassguy

    Thatbassguy New member? Really??

    Joined:
    Mar 27, 2019
    Member:
    #9314
    Messages:
    2,760
    Gender:
    Male
    First Name:
    James
    S/E Wisconsin
    Vehicle:
    2019 TRDORP, KDSS, MGM
    RSG sliders, Yakima offgrid basket, Pro-Comp wheels, SOS Streamline bumper and skids, Warn VR EVO10S winch + Ultimate Sidewinder, Bilstein 6112 + 5100 + rear lift coils, Rigid Dually SS ditch lights w/Caliraised brackets and OEM style dash switch
    @Shnook718 it will also depend on how you're using the 4runner.

    If you plan on towing heavy and often, you're going to put more strain on the drivetrain than someone who just throws a few things in the back and goes camping.

    What are your plans for the 4runner?


    Another thing I should mention is that I drive in S4 a lot, as opposed to overdrive. Keeping it out of overdrive in the hills helps a lot. Even on stock size tires, it would downshift a lot on an incline.
     
    Chris In Milwaukee likes this.
  6. Sep 15, 2020 at 1:57 PM
    #6
    xyzzy

    xyzzy New Member

    Joined:
    Apr 22, 2019
    Member:
    #9619
    Messages:
    121
    Minnesoowta
    Vehicle:
    2019 Barc. Red TRD ORP
    According to going from the stock 265/70R17 to 285/70R17 makes your stock 3.73:1 gear ratio feel like it's actually 3.6:1.

    If you scroll down that same page to the chart and if you blur your eyes a bit (read between the lines), you can see that where the 265/70R17 tires (31.6" in diameter) intersect with the 3.73 gear ratio. Now make that same intersection using the 285/70R17 (32.7" in diameter) tire with the 3.73 gear ratio. For both of these, the intersection is in the blue band, meaning "Highway, Good Fuel Economy".

    If "Best Overall Performance" (green band) is your goal, you'd drop in 4.11 gears for stock tires up to 33" tires, anything beyond 33" tires and you should be looking at 4.56 or higher gears.
     
  7. Sep 15, 2020 at 6:13 PM
    #7
    Oldtoyotaguy

    Oldtoyotaguy Not a new member

    Joined:
    Sep 21, 2018
    Member:
    #7224
    Messages:
    1,172
    Gender:
    Male
    Vehicle:
    2018 Toyota 4 Runner Offroad
    Yeah the thing is that not many of us know how 3.6 “feels”. That’s what the OP is asking. On a heavy vehicle powered by a 4 litre gas engine and auto trans its marginal - but that’s a subjective opinion for sure. Just like women wearing high heels for looks guys put big tires on Toyota’s for looks too - I get it. I’ve done it too, but I try not to make the same mistake twice. But with regearing I’d do it, if I needed it.
     
  8. Sep 15, 2020 at 7:55 PM
    #8
    Thatbassguy

    Thatbassguy New member? Really??

    Joined:
    Mar 27, 2019
    Member:
    #9314
    Messages:
    2,760
    Gender:
    Male
    First Name:
    James
    S/E Wisconsin
    Vehicle:
    2019 TRDORP, KDSS, MGM
    RSG sliders, Yakima offgrid basket, Pro-Comp wheels, SOS Streamline bumper and skids, Warn VR EVO10S winch + Ultimate Sidewinder, Bilstein 6112 + 5100 + rear lift coils, Rigid Dually SS ditch lights w/Caliraised brackets and OEM style dash switch
    As @xyzzy pointed out, the actual size difference from 265/70/17 to 285/70/17 is very small. If you look at revolutions per mile, it's only about a 3.5% difference. I used Toyo Open Country AT3' for reference here, but the size difference should be similar between manufacturers.
     
  9. Sep 15, 2020 at 8:05 PM
    #9
    Mtbpsych

    Mtbpsych New Member

    Joined:
    Dec 3, 2018
    Member:
    #7922
    Messages:
    431
    Gender:
    Male
    First Name:
    John
    Vehicle:
    2018 SR5
    I have 295’s (true 33” tire), and for me it drives well. I’ve hauled about 1000lbs and it does fine. Decent acceleration, and overall is driveable. If I were to row frequently though, I would absolutely regear no question. Going up steep hills it does okay (can cruise up a very steep hill on the highway at 65mph at about 3k RPMS), but if I were to be towing anything I would definitely be overloading the transmission with stock gears and the 295’s. My two cents, and of course opinions will vary. Another thing to consider is MPG. I’ve been happy with my rig, I’m around 17MPG with mixed city and highway driving. If MPG is a big factor for you I wouldn’t go past 275’s.
     
    Last edited: Sep 15, 2020 at 8:21 PM
    Thatbassguy likes this.
  10. Sep 15, 2020 at 8:21 PM
    #10
    e_alvarez91

    e_alvarez91 New Member

    Joined:
    Dec 30, 2019
    Member:
    #12512
    Messages:
    57
    Gender:
    Male
    First Name:
    Eddie
    Rydal, GA
    Vehicle:
    2020 TRD ORP Venture
    Good to know, I've got 295 Geolandar MTs sitting in my garage waiting for my lift to get here!
     
    Thatbassguy and Mtbpsych like this.
  11. Sep 15, 2020 at 8:24 PM
    #11
    Mtbpsych

    Mtbpsych New Member

    Joined:
    Dec 3, 2018
    Member:
    #7922
    Messages:
    431
    Gender:
    Male
    First Name:
    John
    Vehicle:
    2018 SR5
    You’ll love how they look, and start to catch the bug and think they look small and want to go 35’s:rofl: be sure to post once everything is installed:woot:
     
    gunsnob and Thatbassguy like this.
  12. Sep 16, 2020 at 5:30 AM
    #12
    gunsnob

    gunsnob New Member

    Joined:
    Apr 29, 2019
    Member:
    #9708
    Messages:
    603
    Gender:
    Male
    First Name:
    Vince
  13. Sep 16, 2020 at 5:54 AM
    #13
    Oldtoyotaguy

    Oldtoyotaguy Not a new member

    Joined:
    Sep 21, 2018
    Member:
    #7224
    Messages:
    1,172
    Gender:
    Male
    Vehicle:
    2018 Toyota 4 Runner Offroad

Products Discussed in

To Top