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Thread: 18" VS 20"

  1. Top Of Page | #1
    CodyW's Avatar

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    18" VS 20"

    Looking for input on 35x12.50 Tires on 20x9 vs 18x9 Rims.

    I know Carli for example says they recommend the 18x9s.

    Sent from my SM-G986U using Tapatalk


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  3. Top Of Page | #2
    TexNeck's Avatar

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    Re: 18" VS 20"

    Quote Originally Posted by CodyW View Post
    Looking for input on 35x12.50 Tires on 20x9 vs 18x9 Rims.

    I know Carli for example says they recommend the 18x9s.

    Sent from my SM-G986U using Tapatalk
    What kind of input?

    Are you meaning like mileage loss/gains and wear issues?

    I’m running 35x12.5x20- for mostly street and gravel roads.

    I’ve had zero issue and I personally like the look of 20s with 35” vs 18s.

    2013 Ram 2500
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  5. Top Of Page | #3
    CodyW's Avatar

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    Re: 18" VS 20"

    Quote Originally Posted by TexNeck View Post
    What kind of input?

    Are you meaning like mileage loss/gains and wear issues?

    I’m running 35x12.5x20- for mostly street and gravel roads.

    I’ve had zero issue and I personally like the look of 20s with 35” vs 18s.
    I guess of there is really much difference in ride quality and overall performance.

    I like the look of 20s better, but the price is a bit lower for rims/tires for the 18s.

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  7. Top Of Page | #4
    TexNeck's Avatar

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    Re: 18" VS 20"

    Quote Originally Posted by CodyW View Post
    I guess of there is really much difference in ride quality and overall performance.

    I like the look of 20s better, but the price is a bit lower for rims/tires for the 18s.

    Sent from my SM-G986U using Tapatalk
    Overall it will more so come down to the tire selected and the psi that it is run.

    If you are set on 35s you should save sims weight going with the larger 20” wheels.

    Lowering your psi below the factory tpms 75+ makes a huge difference in ride quality.

    2013 Ram 2500
    John 3:16 - Philippians 4:13

    See what we are up to on:
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  9. Top Of Page | #5
    MOD watersupply189's Avatar

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    Re: 18" VS 20"

    I’m running 35’s on 18” rims. I personally like the look better than 20” plus you have more sidewall running an 18”.


    2016 Ram 3500 CC 4x4, G56, Dr. DRD medically cured!

    2016 RAM 3500 4x4 Laramie Crew Cab
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  11. Top Of Page | #6
    badbajawa's Avatar

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    Re: 18" VS 20"

    37s on 20s or 35s on 18s has always been my rule to get the best ride out of them.

    Let me give a couple of questions for you that may give you some things to think about though.

    Have you looked at the price of a 35" tire for a 20" wheel?

    Also have you tried to find an E rated tire with enough load capacity in a 35" for a 20" wheel?

    The 35x12.50R20 tires tend to cater to the lightweight trucks and jeeps anymore it's fairly difficult to find one with an adequate 3400lb+ load rating. Plus anything that goes around a 20" wheel tends to cost more.

    Also just my past experience but a 35 on a 20 isn't the best for towing I found it to wander a bit.

    Now that I've ripped on 20"s I will also mention that for the last 2 years I've ran a 37" on a 20" and I'm now running a 38" on a 20" and I do very much like the look of 20" wheels on these trucks and can understand where this question comes from.

    Sent from my SM-N975U using Tapatalk

    2014 Ram 3500 mega cab srw, full thuren 2.5 kit, 38" toyos, 4.56 gears, revmax 850 68RFE, grid heater delete w/ monster ram, steedspeed manifold, Ats aurora 6000 add a turbo(s465), ARP 625s, pushrods & springs, 5" tbe, sb filter, stock fuel

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  13. Top Of Page | #7
    CodyW's Avatar

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    Re: 18" VS 20"

    Quote Originally Posted by badbajawa View Post
    37s on 20s or 35s on 18s has always been my rule to get the best ride out of them.

    Let me give a couple of questions for you that may give you some things to think about though.

    Have you looked at the price of a 35" tire for a 20" wheel?

    Also have you tried to find an E rated tire with enough load capacity in a 35" for a 20" wheel?

    The 35x12.50R20 tires tend to cater to the lightweight trucks and jeeps anymore it's fairly difficult to find one with an adequate 3400lb+ load rating. Plus anything that goes around a 20" wheel tends to cost more.

    Also just my past experience but a 35 on a 20 isn't the best for towing I found it to wander a bit.

    Now that I've ripped on 20"s I will also mention that for the last 2 years I've ran a 37" on a 20" and I'm now running a 38" on a 20" and I do very much like the look of 20" wheels on these trucks and can understand where this question comes from.

    Sent from my SM-N975U using Tapatalk
    Thanks for the info!

    I have been running the factory 20x8.5 rims with 295/65R20 Nitto Ridge Grapplers (35x11.5) Load Rating E.

    I want to go to 35x12.50 Nitto Ridge Grapplers Load Rating F. The total package is about $550 less for the 18x9 vs 20x9 rims.

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  15. Top Of Page | #8
    badbajawa's Avatar

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    Re: 18" VS 20"

    I can't recommend against load range F enough. Ultimately up to you and your application, but the unloaded ride with an F rated tire sucks the additional two sidewall plys create a very stiff ride even when tire pressure is adjusted very low.

    If you only use your truck for hauling or potentially have a service bed or something of that nature that warrants the extra capacity of an F range tire that changes things a bit, but if you have a stock truck with no additional weight adders and most of your driving is highway and unloaded I would highly recommend against the F range tires.

    Sent from my SM-N975U using Tapatalk

    2014 Ram 3500 mega cab srw, full thuren 2.5 kit, 38" toyos, 4.56 gears, revmax 850 68RFE, grid heater delete w/ monster ram, steedspeed manifold, Ats aurora 6000 add a turbo(s465), ARP 625s, pushrods & springs, 5" tbe, sb filter, stock fuel

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  17. Top Of Page | #9
    badbajawa's Avatar

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    Re: 18" VS 20"

    A little tire tech in case you are unfamiliar:

    The load rate letter refers to the amount of plys in the sidewall not the weight rating given

    Sent from my SM-N975U using Tapatalk

    2014 Ram 3500 mega cab srw, full thuren 2.5 kit, 38" toyos, 4.56 gears, revmax 850 68RFE, grid heater delete w/ monster ram, steedspeed manifold, Ats aurora 6000 add a turbo(s465), ARP 625s, pushrods & springs, 5" tbe, sb filter, stock fuel

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  19. Top Of Page | #10
    CodyW's Avatar

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    Re: 18" VS 20"

    I was wondering if the F rating tires would be a lot stiffer.

    I wouldn't mind the extra life though.

    They do have them in E.

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