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  1. #1

    Default 2021 Mojo trailer 15's or 18's??

    ok, so ordering a new mojo - do I want 15's or 18's on my trailer?

    I had 15"s (or whatever the smaller size was) on my 2018 - and now looking at a 2021 - I selected 18's.. but want to know pros and cons?

    I hear that that smaller ones actually hold more weight (which, I will potentially be trailering with lead).. so that's a plus..

    the downside is I just didn't like how it looked on the max (they looked too small for the boat)... so I ordered 18's but understand that apparently they aren't as good in terms of the weight they hold? How big of a difference are we talking about?

    Am I making a big mistake going 18's?

    any difference in the trailer "ride"?

    thanks!!

  2. #2
    Join Date
    May 2018
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    2,735

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    The 15s are an actual D range trailer tire. Rated over 2500# load capacity per tire.

    18s are 2271# load each so still plenty, but are really an SUV tire.

    All said, I chose the 18s on looks alone. Had 15s on last trailer and just no bling factor.


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    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  3. #3
    Join Date
    Aug 2017
    Posts
    1,358

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    18s just look more betterer. Do it!




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  4. #4
    Join Date
    Jun 2008
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    Henderson, NV
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    18's have a lower limit as larry suggested. if you are planning on using lead and tow a lot, I'd opt for the 15's. each tire might not sound like much but it's a grand once you are all in(this was deduced from another thread comparing 2 boatmate trailers on same boat, 1 18's and 1 15's). that's significant.
    18's add 2" to the height so for those that are garage challenged with that, 15's will appeal to a wider audience at resale IF garage height is an issue.
    15's will also have a smaller diameter so a little easier to change a tire if needed. I had a hard time with the drive up wheel jack I made when I yanked all the rims off our old trailer to get powdercoated.

    we have same boat different trailer right now. 18's were nice but I find that it seems to back into the garage easier with the smaller tires as the contact patch is quite a bit smaller. trailer seems to turn easier. this is all perception on my part.

    18's do look good but for us, the extra couple grand for looks/ego weren't worth the loss in overall trailering capacity and at resale time, recouping the $$ might and might not happen.

    see this thread for a big boat sitting on 15's
    https://forum.moomba.com/showthread....19-Supra-SL450
    Last edited by sandm; 11-10-2020 at 12:00 AM.
    '06 Supra Launch 20SSV-gone but never forgotten

  5. #5

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    Thanks guys!!! So a 2021 mojo - 4800 plus 850 lbs (5650) of lead sitting on 18's is a no go?

    Our max was 4500 + 850 (5,350).. and had 15's


    Are we close to a theoretical maximum here.. or am I being a drama queen? (King?)

    Or, if I went with 300 lbs less in lead (500) - which I was maybe planning on... (same weight) ... would it be ok?

    Same handling characteristics would you say? As far as bounce / rear sag of truck?

    Of course I would never trailer with lead *asking for a friend.....

    ��
    Last edited by Dank; 11-10-2020 at 01:31 AM.

  6. #6

    Default

    Sick looking boat man... is that a max? Best boat ever... loved ours!! 250 awesome hours.

    Great color!
    Last edited by Dank; 11-10-2020 at 01:39 AM.

  7. #7
    Join Date
    May 2018
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    A 255/55/18 only adds 0.7 height versus the 225/75/15


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    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  8. #8
    Join Date
    Aug 2015
    Location
    Mn
    Posts
    616

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    Quote Originally Posted by Dank View Post
    Thanks guys!!! So a 2021 mojo - 4800 plus 850 lbs (5650) of lead sitting on 18's is a no go?

    Our max was 4500 + 850 (5,350).. and had 15's


    Are we close to a theoretical maximum here.. or am I being a drama queen? (King?)

    Or, if I went with 300 lbs less in lead (500) - which I was maybe planning on... (same weight) ... would it be ok?

    Same handling characteristics would you say? As far as bounce / rear sag of truck?

    Of course I would never trailer with lead *asking for a friend.....

    ��
    You pose some good questions that had not occurred to me. Especially in light of sandman's statement:
    "18's add 2" to the height so for those that are garage challenged with that"

    With all that weight, if you add a full tank of gas, 540#'s, another couple hundred pounds of gear, cooler, 3-400 #truck passengers, depending on your rig, you might be reaching towing and trailer tongue capacity.
    I wonder how the extra 2 inches height affects trailer tongue weight. You know, like when you have 2 guys carrying a piece of furniture, the shorter guy gets more of the weight distributed to his end. I this case the boat axles sit higher and more incline of boat towards the hitch unless you have an adjustable hitch that you can raise. This would send a higher percentage of the overall trailer weight to the hitch. Shouldn't be a big deal if your towing with most 1/2 ton trucks but I've seen people tow these things with Toyo highlanders and midsize SUV's, and you're really playing with fire at that point so every bit of extra weight or offset of trailer leveling causing more tongue weight maters.
    All I'm saying is make sure you have a rig set up for all that weight.
    2020 Supra SL 400
    2015 Moomba Mojo(Sold)
    2018 Yamaha Waverunner(Just to fool around)
    2018 F150 Lariat
    sport edition, 3.5lt ecoboost

  9. #9
    Join Date
    May 2018
    Posts
    2,735

    Default 2021 Mojo trailer 15's or 18's??

    Quote Originally Posted by Dank View Post
    Thanks guys!!! So a 2021 mojo - 4800 plus 850 lbs (5650) of lead sitting on 18's is a no go?

    Our max was 4500 + 850 (5,350).. and had 15's


    Are we close to a theoretical maximum here.. or am I being a drama queen? (King?)

    Or, if I went with 300 lbs less in lead (500) - which I was maybe planning on... (same weight) ... would it be ok?

    Same handling characteristics would you say? As far as bounce / rear sag of truck?

    Of course I would never trailer with lead *asking for a friend.....

    ��
    Speaking tire ratings only.....4 Nitto 420s (Boatmate tire of choice) 255/55/R18 XL will carry 9084# maximum.

    There is a nexen nfera option 255/45/18 that drops to a 7716# rating that I would not recommend.

    4 trailer king 225/75/15 D will carry 10,196# maximum.

    You are well under that with 5650# boat and 1500# trailer.

    Just to add trailer height data.

    255/55/18 tire is 29 tall
    225/75/15 tire is 28.3 tall

    Technically you would only raise trailer height 1/2 of 0.7= 0.35

    My only issue with the trailer king 15s are they are a Chinese tire, so take that for what its worth.


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    Last edited by larry_arizona; 11-10-2020 at 08:45 AM.
    2021 Supra SA 400
    2018 Supra SA 400 (SOLD)
    Michigan

  10. #10
    Join Date
    Aug 2020
    Location
    Middle Tennessee
    Posts
    270

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    The trailer kings are a cheap tire.
    I had one blow the sidewall out this season on my SA with 600lbs of lead. It could have been a puncture but the tires feel very cheap and light for the duty they are pulling.
    Replacement was $50 or so if that tells you how cheap a tire they are lol.
    I'll likely replace them all with a better tire this next season before any long tows.
    2020 Supra SA

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