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What gear ratio to go with on 35 inch tires

Discussion in '3rd Gen. Tacomas (2016+)' started by Azevedomotorsports, Aug 23, 2021.

  1. Aug 23, 2021 at 6:58 AM
    #1
    Azevedomotorsports

    Azevedomotorsports [OP] Member

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    New to the form I currently own a 2020 Toyota Tacoma TRD6 speed manual I am running 35 inch tires and I was wondering what you would recommend as far as gearing for the differential

    62BB4F73-997B-4AB8-8FF5-4FEFB7CA87BE.jpg
     
    Tacobeltran, imaiami, kas2828 and 4 others like this.
  2. Aug 23, 2021 at 7:04 AM
    #2
    Chunk

    Chunk Truffle Shuffle Extrodinaire

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    5.29 w/ a tune! Good looking truck there!
     
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  3. Aug 23, 2021 at 7:10 AM
    #3
    OMGitsme

    OMGitsme Well-Known Member

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    5.29 without a doubt.
     
  4. Aug 23, 2021 at 9:15 AM
    #4
    durtytaco17

    durtytaco17 Active Member

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  5. Aug 23, 2021 at 9:15 AM
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    Traction

    Traction Well-Known Member

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    Dang, I like that painted front bumper!
     
  6. Aug 23, 2021 at 9:25 AM
    #6
    Chugiak76

    Chugiak76 Well-Known Member

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    If it was an automatic, I'd tell you 5.29 all day long.

    4.88 on 35s is equivalent to stock 31s on the stock 4.30 ratio. (in terms of engine speed to road speed correlation.)

    If you were happy with that level of torque, then you should go with 4.88s. If you feel you still want a little more torque in each gear, then by all means you should go for 5.29.

    For reference, (assuming 35" tires) the 4.88 would put you at 2350/2800 RPM at 70 MPH in 6th/5th, while the 5.29 would put you at 2550/3000 RPM at 70 MPH in 6th/5th.
     
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  7. Aug 23, 2021 at 10:31 AM
    #7
    Azevedomotorsports

    Azevedomotorsports [OP] Member

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    Thanks for all the advice guys gave me a lot to think about. As far as fuel consumption on 4.88 to 5.29 goes any opinions on that ?
     
  8. Aug 23, 2021 at 10:35 AM
    #8
    nudavinci64

    nudavinci64 Taco Outlaw

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    Boosted Money Pit....
    it will pob not be much different on either gearing. the big factor that is going to hurt you is the tires themselves. the gearing wont solve the MPGs and likely will still see lower MPG.

    If you offroad or will offroad the truck you also should look into trimming your fenders. They will become victims at some point. Normal driving likely won't make a difference.

    Nice looking truck as someone noted. the color-matched bumper is a nice touch.
     
  9. Aug 23, 2021 at 10:43 AM
    #9
    Azevedomotorsports

    Azevedomotorsports [OP] Member

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    The fenders have already been trimmed I also ended up notching my frame about an 1 1/2 with a welded block off plate for clearance so that is no issue . I do all types of custom fabrication mostly on European sport vehicles in my shop the Tacoma is my daily driver I have and love driving this thing more than I do my Gt3 some times
     
  10. Aug 23, 2021 at 10:56 AM
    #10
    nudavinci64

    nudavinci64 Taco Outlaw

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    Boosted Money Pit....
    nice! was based on the current photo. looks like you got it covered. Diff vehicles for different uses but hard to argue with a GT3 ha
     
  11. Aug 23, 2021 at 11:14 AM
    #11
    3JOH22A

    3JOH22A Toyota Gigolo

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    Get a tune like KDMax first and see if it's satisfactory. I did and off-the-line response is sufficiently good, that I plan to stick with stock gearing. I have an AT.

    Note that 5.29s are weaker due to the finer gear teeth, so you are more likely to break them. 4.56s and 4.88s shouldn't have this problem at the Tacoma's stock power level.
     
  12. Aug 23, 2021 at 12:36 PM
    #12
    Chugiak76

    Chugiak76 Well-Known Member

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    Fuel consumption will go up as the final drive goes up, but not in any meaningful amount. It really depends on how you drive, and the heavier wheels are going to slash fuel economy much more than gearing change.

    When lower final drives are specified, there are diminishing returns in fuel economy, and trust me, Toyota spec'd the Tacomas to have the lowest final drive possible to the point that any further gains in efficiency would be greatly overshadowed by the hindered performance. That means we have plenty of wiggle room for choosing higher final drives to improve performance without impacting fuel efficiency much at all.

    4.30 vs 4.88 we're talking about maybe 5 miles off an entire tank of fuel, and 4.30 vs 5.29 maybe 15 miles off an entire tank. The Tacoma's 3.5 engine is pretty efficient at any RPM from 1100 to 3000 thanks to port and direct injection. If we were talking 4.30 vs 6.10, then yes, you could start shaving 50 miles off an entire tank of fuel. Of course that's an extreme example though. Hope this helps.
     
  13. Aug 23, 2021 at 12:42 PM
    #13
    mauctopa

    mauctopa Well-Known Member

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    Do you have a build thread?
     
  14. Aug 23, 2021 at 12:43 PM
    #14
    Azevedomotorsports

    Azevedomotorsports [OP] Member

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    That’s awesome advice learning a lot when it comes to these Tacoma‘s I appreciate all the help thank you .
     
  15. Aug 23, 2021 at 2:02 PM
    #15
    Azevedomotorsports

    Azevedomotorsports [OP] Member

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    No I don’t.
     
  16. Aug 23, 2021 at 4:04 PM
    #16
    Pengowirr

    Pengowirr Well-Known Member

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    How does it feel right now. You got a 4.30. Do you feel is absolutely necessary to regear?
     
  17. Aug 23, 2021 at 4:55 PM
    #17
    Bertw192

    Bertw192 Well-Known Member

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    All the things!
    What fender flares are those?
     
  18. Aug 23, 2021 at 7:22 PM
    #18
    mauctopa

    mauctopa Well-Known Member

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    Do you mind sharing some of the details pertaining to the suspension, bmc?, lift amount, wheel offset ? Thanks
     
  19. Aug 23, 2021 at 10:36 PM
    #19
    rad_taco

    rad_taco Active Member

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    I have a manual, 285/75/17s(close to 34 inch tires) and run 4.88 gears. I wish I did it sooner. Can't speak much on going 5.29s on 35s. All I can say is I am able to cruise up hills with less rowing of gears. If you go 5.29s, let us know how you like em!
     
  20. Aug 24, 2021 at 4:33 AM
    #20
    Azevedomotorsports

    Azevedomotorsports [OP] Member

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    Wheel size 17x9.5 0 offset
    Tire size 35
    3inch lift
    Bilstein shocks
    Adjustable control upper control arms
    Custom made adjustable plates for the lower control arm for caster and camber extra adjustment
    Cut about 1 1/2 from BMC and welded block off plate
    Fenders and flares were also trimmed for clearance
    Over all took me a while to get it to shit the way it looks with out any rubbing . also the front bumper was a big help allowing me to push the wheel forward.
    Hope this helps anyone looking to do this type of set up .
     

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