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!!

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

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

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


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18s just look more betterer. Do it!

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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

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.....

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

Great color!

A 255/55/18 only adds 0.7” height versus the 225/75/15


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Quote:

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Originally Posted by Dank

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.....

��

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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.

Quote:

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Originally Posted by Dank

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.....

��

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

There is a nexen n’fera 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 15’s are they are a Chinese tire, so take that for what it’s worth.


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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.

Quote:

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Originally Posted by larry_arizona

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

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almost every boat dealer out there told us 1.5-2" if you add 18's to the trailer and we confirmed this with a few phone calls and a couple of the websites show 1.5" for 18's under boat specs.
I am assuming that you also might need to factor in axles getting clocked a little higher for the rims due to width.

be careful using tire load ratings. our boatmate trailer has a max rating of 7500lbs on the sticker. each axle is rated at 3750lbs. this is below the ratings of all 4 tires added up.

I still think 2” is a high estimate. But the 18’s and 15’s are very similar in tire height.


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Quote:

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Originally Posted by larry_arizona

I still think 2” is a high estimate. But the 18’s and 15’s are very similar in tire height.


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yup. 2" is .5" on the high side but figure a tad higher and if you are sweatin .5" then go 15's. 1.5" is the standard that the 4 manuf. we were shopping came back with as the number to use and 2 other manuf. had 1.5 listed on the website.

it's actually kinda odd that the 2 biggest dimensions that most will shop are height on trailer and length on trailer. every manuf lists length in several measurements with/without tongue/platform but height is only listed on a couple of websites and not as descriptive if it's listed. we had to call.
not many houses out there being built with garages over 8ft high as a standard sans rv garages and 7ft is standard in some parts. would think this is just as critical as length.

Quote:

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Originally Posted by sandm

almost every boat dealer out there told us 1.5-2" if you add 18's to the trailer and we confirmed this with a few phone calls and a couple of the websites show 1.5" for 18's under boat specs.
I am assuming that you also might need to factor in axles getting clocked a little higher for the rims due to width.

be careful using tire load ratings. our boatmate trailer has a max rating of 7500lbs on the sticker. each axle is rated at 3750lbs. this is below the ratings of all 4 tires added up.

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Very helpful info! so, essentially 5600 lbs on a trailer that can handle 7500 should, overall be Ok... yes? 5300 lbs if we only end up using 500 in lead.. if that's all it needs.. we'll have to get out there and test it out..

Additional question to all of this: My truck is well within limits (9-10k tow capacity) but the rear tends to squat a bit. Not a lot, but more than I would like.

Has anyone had airbags installed to help with the squat at all? Liked / not liked? thoughts?

This isn't related to load or weight, but I imagine a larger tire also gives you more clearance between the prop guard and ground. I'm thinking about upgrading to 20's just to have the additional 2.5 inches of clearance. I'm worried I won't even be able to navigate the slight incline to get my boat on my driveway. My trailer is coming with 15's, but it's not a boatmate...it's one called Metalcraft out of SLC. I hope it doesn't suck.

dank,
keep in mind it's not just the boat weight. you have to add any options to the boat weight such as heater, upgraded stereo, etc and then factor in fuel, anchors, ropes, tubes, little bit of water that remains in the boat after each outing and on and on and on. so the dry weight of the boat can increase quickly.

one boat brand 10 years ago listed dry weight without towers :)

Quote:

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Originally Posted by Guppydriver

This isn't related to load or weight, but I imagine a larger tire also gives you more clearance between the prop guard and ground. I'm thinking about upgrading to 20's just to have the additional 2.5 inches of clearance. I'm worried I won't even be able to navigate the slight incline to get my boat on my driveway. My trailer is coming with 15's, but it's not a boatmate...it's one called Metalcraft out of SLC. I hope it doesn't suck.

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Rim size has nothing to do with clearance, it’s the tire height.

A low profile 20” tire could be shorter overall

Tire height dictates overall changes in height or clearance

Keep in mind, higher trailer height equals deeper you need to back into ramp.

Last thing I want at my ramps is a taller trailer

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If it is in the budget I would go 18's every day and twice on Sunday if you trailer your boat. The 18s do not bounce as bad and you will run out of axle capacity way before you run out of tire capacity. They are make the whole set up look way better. We have 18s on out 2017 Mojo and we constantly get complemented on set up and rims are always specifically mentioned.

I am planning on adding airbags and an onboard compressor with wireless remote to my 18 F150 this spring.

Quote:

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Originally Posted by larry_arizona

Keep in mind, higher trailer height equals deeper you need to back into ramp.

Last thing I want at my ramps is a taller trailer

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you get 15's on your new sa?

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Originally Posted by sandm

you get 15's on your new sa?

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Hell No!!!! 18’s all day.

I am ok with 1” higher, just saying 20’s with an appropriate side wall aspect ratio is raising it too high


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My 15" on my mondo had leaf springs vs. torsion axle(on my 18s\Mojo). Are springs standard on 15s...or with bigger boats do you always get torsion?

Good lord this is turning into analysis paralysis. The only practical reason to not get the bigger wheels is money. If you can afford it, and don’t care, get them.


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Supra Boatmates come with torsion for duals and leafs for tris.


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18s all day and every day.

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Originally Posted by dakota4ce

Good lord this is turning into analysis paralysis. The only practical reason to not get the bigger wheels is money. If you can afford it, and don’t care, get them.

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not exactly. couple boats we looked at, 18's were the difference between 8 and 9ft garage door heights. our old tige 22ve would slide under our old houses' 7ft door IF someone pulled the alpha tower down the last couple inches to clear the door. 18's would have been a no go. it was a dealbreaker to buy the house and glad the dealer opted for 15's.

it's good to discuss this as some get all tied up in the excitement of a new boat and don't fully think through some of the logistics of boat ownership or assume the dealer/website says "x" and it's actually "y" based on what the customer orders. just like surfpipes. heaters. showers. etc.

I have never had a boat that goes under an 8’ door. Do any new ones fit?

I can’t see any of the new SC boats clearing. But maybe I am wrong! No way a Mojo goes.

My Max barely goes under a 9’ door.

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Supra SR, SA, SL fit under 8 foot door with board racks removed.

2 bolts and they pop off.


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Quote:

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Originally Posted by dakota4ce

I have never had a boat that goes under an 8’ door. Do any new ones fit?

I can’t see any of the new SC boats clearing. But maybe I am wrong! No way a Mojo goes.

My Max barely goes under a 9’ door.

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My understanding is the Mojo with the Pro tower should fit under an 8ft door

Plus isn’t he mostly concerned about weight capacity?


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I STAND CORRECTED. [emoji1365][emoji1365]

(Get the 18s if weight capacity is your only concern).


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kaiyen will fit ONLY with pro tower AND 15's. would assume mojo/makai/mondo would but a quick call to drew told us about kaiyen so sure they would answer on other boats as well.
sa/sr will fit with 15's. there are a couple that told us boardracks would have to remove and a couple that said they didn't but both dealers that had sa's on the lot taped both 15's and 18's and told 15's were close, 18's were out.

there are quite a few boats that will fit under 8ft doors from several different manufacturers including tige, mb, moomba, supra, supreme, sanger and guessing heyday but never comfirmed it.

there are still a few boats out there that will fit 7ft doors but they are getting rare.

Quote:

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Originally Posted by rdlangston13

If it is in the budget I would go 18's every day and twice on Sunday if you trailer your boat. The 18s do not bounce as bad and you will run out of axle capacity way before you run out of tire capacity. They are make the whole set up look way better. We have 18s on out 2017 Mojo and we constantly get complemented on set up and rims are always specifically mentioned.

I am planning on adding airbags and an onboard compressor with wireless remote to my 18 F150 this spring.

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I called today and am likely going to do airbags on my truck as well..

Quote:

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Originally Posted by dakota4ce

I STAND CORRECTED. [emoji1365][emoji1365]

(Get the 18s if weight capacity is your only concern).


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yes, I was only concerned about WEIGHT (because of lead)... no way a boat would come close to fitting, even though I have a 3 car garage..

We have a 48" outdoor storage that we pay for each month.. :( in fact, In the 3 years I owned the max, I never once put the tower down!

18's it is!!! Decision is made! thanks guys!!

Quote:

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Originally Posted by Dank

We have a 48" outdoor storage that we pay for each month.. :( in fact, In the 3 years I owned the max, I never once put the tower down!

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Depending what lake I go to, if it was far I would tower down to keep the bugs off coming home at night.

I do know one thing for sure, moving lead in/out of a boat is a pain in the arse.


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18s unless you just don’t want to drop the cash

Also you should not that the GVWR of the trailer being 7500 lbs INCLUDES the weight of the trailer too. You can not put a 7500 lb boat a trailer rated for 7500 lb. My 2017 Mojo on the trailer loaded with 200 lb of lead and full fuel and everything we need for the lake is 6940 lb.

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Great pics. Too nice to get that wheels dirty . . .

gooooliiiiee... that boat is hot. wheels look fantastic!

so.... website says 2021 mojo is 6,000 lbs boat and trailer.. if we add 500 lbs of lead say, we are at 6,500. 70 gallons of gas = 441 lbs.. = 6941. plus coolers, etc.

850 lbs of lead would be - 7,241. Pushing it, I would say.. have to assume that the Mfg. limit listed is being cautions (of course) .. but I dunno.

Quote:

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Originally Posted by Dank

so.... website says 2021 mojo is 6,000 lbs boat and trailer.. if we add 500 lbs of lead say, we are at 6,500. 70 gallons of gas = 441 lbs.. = 6941. plus coolers, etc.

850 lbs of lead would be - 7,241. Pushing it, I would say.. have to assume that the Mfg. limit listed is being cautions (of course) .. but I dunno.

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Send it!


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