Demco Spare Tire Mount for up to 4" Trailer Tongue - Silver

Part Number: DM15851-52

In Stock

$205.10

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demco spare tire mount tongue trailer dm15851-52

demco spare tire mount trailer dm15851-52

demco spare tire mount tongue trailer for up to 4 inch - silver

demco spare tire mount tongue for up to 4 inch trailer - silver

demco spare tire mount tongue clamp-on for up to 4 inch trailer - silver

demco spare tire mount clamp-on dm15851-52

demco spare tire mount clamp-on trailer dm15851-52

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0 spare tire mount demco tongue for up to 4 inch trailer - silver

0 spare tire mount demco tongue clamp-on in use

0 spare tire mount demco clamp-on dm15851-52

0 spare tire mount demco tongue clamp-on for up to 4 inch trailer - silver

0 spare tire mount demco clamp-on trailer in use

0 spare tire mount demco tongue trailer dm15851-52

0 spare tire mount demco trailer dm15851-52

0 spare tire mount demco tongue trailer for up to 4 inch - silver

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Comprehensive Review: Demco Spare Tire Mount for up to 4" Trailer Tongue

Demco Spare Tire Mount for up to 4" Trailer Tongue: The Breakdown

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Trailer tongue tire carrier mounts your spare tire up and out of the way. Base attaches around trailer tongues up to 4" x 4". Accepts wheel bolt pattern from 4 on 4" to 8 on 6-1/2". Silver powder coat finish resists corrosion. Great Prices for the best spare tire mount from Demco. Demco Spare Tire Mount for up to 4" Trailer Tongue - Silver part number DM15851-52 can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.

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Demco Spare Tire Mount - DM15851-52

Features:

Provides a mounting point for your trailer's spare tire
Silver powder coat finish offers excellent corrosion resistance
- 500-Hour salt spray rating
Trailer installation mounting hardware included
- Hardware to mount spare tire on carrier not included
Made in the USA

Specs:

Secures around trailer tongue up to 4" x 4"
Fits: bolt patterns from 4 on 4" to 8 on 6-1/2"
Distance between trailer frame mounting holes (center to center):
- 5" Side to side
- 4" Front to back

Diagram showing mounting bolt dimensions center to center

15851-52 Demco Trailer Tongue Vertical Spare Tire Carrier - Silver

Customer Satisfaction Score:

91% were satisfied with this product

9% of customers were not satisfied

etrailer mistake
Product did not meet expectations
Wrong item was ordered

9% of customers were not satisfied

etrailer mistake
Product did not meet expectations
Wrong item was ordered

4.4

133 reviews

5 Stars		(95)
4 Stars		(17)
3 Stars		(6)
2 Stars		(10)
1 Star		(5)

by: Danny 01/06/2026

My little Aluma trailer was too big for the bolts and no lug nuts with the factory studs/bolts,but It’s heavyduty the plate took 60 ft.lbs and didn’t bend

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by: David 06/12/2024

The tire mount arrived quickly and in perfect condition. It is very sturdy and constructed well, but like others have stated it wont fit a square rv bumper without some modification. I used a jigsaw with a fine tooth metal blade and cut the two holes out larger on the mount then drilled the holes on the plate with a 1/2” drill bit to align with the modified square holes on the mount. See the picture and it will make sense. It’s too bad they didn't just design it to fit a 4” square rv bumper in the first place, so thats why 4 stars. But with a little easy machine work and some silver spray paint to touch up it works. Its the only solution for getting the spare tire to sit up on top of the bumper and not behind it so you can use a rack and it’s expensive but solves my problem.

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David One Year Later

6/16/2025

Still good after a year, works perfect for the application. Now if they could just get it sized right for a square bumper, but if can do some mechanic work you can fix it.

Nick S.

6/17/2025

@David Besides a little DIY work, I am glad it is working just how you need it. I appreciate the feedback as well, something I will definitely pass along for future ideas. Great to hear you got it working though. What kind of trailer did you end up putting this on?

by: Rob 05/08/2024

I looked elsewhere for a tongue mount spare tire carrier with no luck. I thought, etrailer has always had what I need so I looked here. The first search and I found this mount and it's perfect! You can see in the photos that it fits snug against the rock shield/tool box. I left some space under the tire and I tried to align the two bolts perfectly so that when I remove the tire it will be easy to put back on again. As an added benefit my tool box cover has something to rest against when its open, the tire. The lid didn't have a stop on it. When I opened it the lid would hang on the hinge and I know that wasn't good for the hinge in the long run. I did a live chat to ask what size lug nuts I needed to hold the tire on. It was quickly answered to use 1/2 inch lug nuts. Advance Auto had them for $2.50 each and they were open so the bolt threads didn't hit a stop when I screwed the nuts on. I'm very pleased with the purchase and will continue being one of their loyal customers.

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Rob One Year Later

5/9/2025

After a year I still love it. We use the trailer every month, April - November, to take the Cam-AM Spyder camping with us. The tire is held securely and in the perfect place on this trailer.

Jon G.

5/14/2025

@Rob Thanks for the continued feedback! I can't quite tell from the trailer; do you load the Cam-AM Spyder up into the trailer, or you tow the trailer with the Spyder? Either way, I'm sure that's a great conversation starter!

by: Terry 04/07/2025

It a quality, well built spare tire mount. I installed today without any issues. Thank you.

Terry One Year Later

4/8/2026

Very good.

by: Matthew 03/05/2026 One Year Later

After having been on the trailer for over two years now, it is still as solidly mounted as the day I installed it. Have not had to tighten any bolts due to vibration or extensive use. The trailer had been towed for 1000s of miles in the Pacific Northwest, sometimes on very rough roads, so bolts loosening is a very real possibility. I am very pleased with this and am seriously considering getting them for all my trailers that lack spare tire mounts.

by: Gerald 06/08/2026 One Year Later

It mounts on the rear number but the tire is still way out
I cut it apart revised it so my tire actually sits almost on the bumper now

Claire H.

6/10/2026

I'm glad you were able to make it work with some modification. Since it's designed to fit trailer tongues it's not always the best fit for an RV bumper, but we've seen people make it work with a few changes.

by: Jim 06/06/2023

I wanted to store my spare tire and wheel in the nose of my enclosed trailer and did not want to attach it to the wall as my trailer is totally of aluminum construction. Normally I fabricate my ideas as typically cannot find something I like or is not made well enough as I am an engineer and fabricator. This one quality built item is of a great design with robust materials and quality welding and powder coating. Its design will accommodate just about any wheel and tire combo you have. The only thing I needed to do to mount it inside and go through the floor was to get longer carriage bolts to accommodate the additional thickness of the flooring. It not only looks great but also is as solid as a rock. Even though the universal mounting fit well, I decided to make a custom wheel mounting plate that fit my specific unit symmetrically and used fasteners with the same thread as my factory lug nuts. Enclosed a print if you would like to make one for yourself. It fits a 5 lug 4-1/2” bolt wheel.

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by: Charles 05/13/2026

Exactly what I needed to ad spare to my car hauler. Heavy duty and holds apare tire sturdy.

by: Al 03/03/2021 One Year Later

This is a great Spare Tire holder, very well built, very sturdy. Not flimsy like other spare carriers .

I added it to my motorcycle trailer, spare tire is mounted out of the way too.

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by: James 05/24/2024

Pictures showing measurements are incorrect, inside measurements are 3-1/2” not 4” as stated. I had to modify bolt holes to fit a 4” square tube bumper. Mount is installed and looks like it will work for me.

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Brooke M.

6/4/2024

Aw man! You are right! I just had the part pulled to remeasure and its narrower like you said. I am glad youre able to make it work. I am going to have our info updated so this doesnt happen to anyone else. Thanks for bringing it to our attention!

by: William 03/06/2023

I ordered this for my box trailer as I needed to get the spare tire out of the box. The carrier is very well made,nice craftsmanship. I also had to buy longer bolts as my trailer has a 5 inch frame, I knew about this when I ordered,not an issue. Easy to install,great product.

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by: Brian 02/21/2024

This was the only spare tire carrier I could find that would work with my Ridgeline fish house! There are interference limitations on the tongue due to the tongue jack and house lowering mechanism and this product worked perfectly!
Box was damaged in shipping but part was undamaged. I just wish it came with lug nuts. 1/2"x20 if your're wondering.

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by: June 07/08/2021

It was easy to install and fit on my trailer tongue just fine. Appears to be solid and well built. I also got the spare tire and wheel from etrailer. It's one of those be sure to take it, but don't want to use it items.

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by: Mike 09/06/2026

Very nice product.

by: Dan 02/07/2025 One Year Later

Expensive and heavy but indestructible. Make slightly lighter version of this and I’ll give you 5

Dan One Year Later

2/8/2026

Still holding the tire. Its heavy which means it will outlast the trailer. Expensive but would still buy it.

Kate F.

2/9/2026

@Dan Glad to hear things are holding up a year later as they should Dan! Sometimes we have to spend a little more than what we would like in the beginning to make sure we get something that lasts! What kind of trailer did you put this on?

by: Edward 08/16/2024

Great product as advertised and great service. Will definitely buy from e-trailers again.

Edward One Year Later

8/16/2025

Still just like new, it has worked great!

by: Steven 06/25/2020

Very well made spare tire mount made of quality steel. Great workmanship!

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by: Geoff 09/18/2025

Very easy installation. Strong, secure storage for the spare tire. Solved the issue I have had for years storing the spare tire for my open car hauler. I should have bought this years ago.

by: Robert 05/22/2025

It will not work for my application. I tried it on my trailer but the distance from the base of the body to the bottom of where tire would be is nine inches my spare tire is 131/2 inches. This wouldn't even work if placed a spacer between the bumper and the spare carrier base wouldn't work.

by: Jeffrey 04/20/2026

Great product

by: Kenneth 06/17/2025

The product ordered was manufactured by DEMCO and arrived in a timely manner. That was the positive part. When attempting to mount the tire carrier on the trailer tongue it was very apparent that vertical channel onto the tire mounts was welded out of square to the mounting base resulting in the tire noticeably leaning forward. I reached out to the manufacturer with photos and measurements and they acknowledged that it should be welded at a right angle, but I should not be concerned to be satisfied with the $[XX] product. The manufacturers customer service was responsive, but offered nothing to resolve the problem. I would purchase a product from this manufacturer.

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Brooke M.

6/19/2025

Hey, Kenneth. Let me see what I can do for you about this. We will be in touch!

by: Keith 04/23/2025 One Year Later

Great addition to the our tear drop trailer tongue. It was very easy to install and has been great to keep our spare close!

by: LS 06/17/2024

Spare tire mount is VERY heavy, actually a bit too heavy in my opinion. Adds a lot of unnecessary tongue weight. Also it did not include lug nuts to mount the tire, therefore 4 stars because I have to disassemble it to remove a bolt to take to the auto parts store to find lug nuts. Definitely should be included for what this thing cost!

Katrina D.

6/19/2024

Since it is common for the lug nuts to come with your spare tire, it is not required for the lug nuts to come with this carrier. If you can provide the size of the nuts you are needing, I would be more than happy to help you find some.

by: Lloyd 03/08/2024

I love the sturdiness of this item, however the description clearly states that it fits 4"X4" and it does not. The clearance between the mounting bolts is only 3.5" and this did not work for the use I bought it for. Because of the strong heavy duty manufacture of unit I am keeping it and I hired a welder to make it work for my application.

Brooke M.

3/13/2024

I measured the bolts and youd have to install the tire stand head on and not sideways. Ill see if that is information we can add to our site. Thanks for letting us know!

by: Larry 01/23/2025

That is a great Spare Tire Mount. Very stout. It gets the Spare Tire completely out of the way.

Thanks.

Larry

133

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See what our Experts say about this Demco Spare Tire Mount

Do you have a question about this Spare Tire Mount?

Recommended Spare Tire Carrier for 4" Square Rear Bumper on RV
The bolts on the Demco Spare Tire Carrier for up to 4" Trailer Tongue - Silver # DM15851-52 are roughly 4-1/2" apart; this carrier is designed to fit on 4" x 4" trailer tongues, so it would also fit on a 4" square bumper but it isn't the best solution. Instead I recommend using the Ultra-Fab Folding Spare Tire Carrier for Trailers and RVs - Bumper Mount # UF15-954730, which can fit a variety of different bolt patterns and is designed to fit on 4" x 4" square bumpers. I've linked a review...
view full answer...
What is Length of Bolts that Come with Demco Spare Tire Mount for up to 4" Trailer Tongue
Hey Andy, the bolts that come with the Demco Spare Tire Mount for up to 4" Trailer Tongue # DM15851-52 that you referenced are right at 4 inches long 3/8 inch diameter and are a fine thread. Did you lose yours?
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Are The Demco Spare Tire Carriers # DM15851-52 & # DM15851-76 The Same Except For Color?
I was able to determine the information on the Black # DM15851-76 spare tire carrier was incorrect. It is the same carrier as the Silver # DM15851-52 with the only difference being the color. Both of these fit a trailer tongue up to 4" x 4". Thank you for pointing out the error on our site as I have had this corrected.
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What Is The Weight Capacity Of The Demco Spare Tire Mount DM15851-52
Hey Tom, thanks for reaching out. The Demco Spare Tire Carrier # DM15851-52 doesn't have a published weight capacity because the limiting factor isn't the carrier itself, it's the wheel and bolt pattern. It's designed to fit wheels with bolt patterns up to 8 on 6-1/2 inches, so if your spare fits the carrier properly, it's within the intended operating range. The only thing I recommend is making sure the carrier is mounted securely to a structurally sound part of the trailer and that all...
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Recommended Spare Tire Carrier for a 4"x 4" Trailer With 4 Lug Wheels
Randy, I wasn't able to find anything for those specific wheels unfortunately. I was able to find the Demco Spare Tire Mount for up to 4" Trailer Tongue # DM15851-52 which can fit up to a 4" x 4" wide tongue and bolt patterns from 4 on 4" to 8 on 6-1/2". There is no specified wheel size so as long as it uses any of those bolt patterns, it should work.
view full answer...
Weight of Demco Spare Tire Carrier For Trailer Tongues up to 4 Inches
The weight is just 19 lbs for the Demco spare tire carrier for trailer tongues; it also comes in your choice of silver or black in color (the weight is the same for each): - Silver: Demco Spare Tire Carrier for up to 4" Trailer Tongue # DM15851-52 - Black: Demco Spare Tire Carrier for up to 4" Trailer Tongue # DM15851-76 As for mounting, it does need to be mounted vertically so the weight is centered on the carrier itself as opposed to on the mounting hardware. There isn't actually...
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Can Demco Spare Tire Carrier be Installed on Inside of Enclosed Trailer
From the floor to the middle of the mounting bracket for the Demco Spare Tire Carrier for up to 4" Trailer Tongue - Silver # DM15851-52 (also available in Black as # DM15851-76) it measures 13-3/4". Ideally the middle of your wheel will be about in the middle of this bracket so you can use this as a gauge as to whether or not your tire will mount to this in the floor of your trailer. Usually on a spare tire mount the tire will hang below the mounting bracket a little bit but if you have...
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What Size Nut Is Used to Hold the Tire on the Demco Bumper Mount Spare Tire Carrier
The Demco # DM15851-76 has 1/2" x 1-1/4" grade 5 bolt with fine threads (.50NF) so you'll want to use 1/2" nuts with a fine thread to secure your tires. There's also a silver version of the carrier using # DM15851-52
view full answer...
What Hardware Comes With the Demco Spare Tire Carrier
The Demco Spare Tire Carrier for up to 4" Trailer Tongue - Silver # DM15851-52 only comes with the trailer installation mounting hardware. The carrier does not come with the hardware to mount your spare tire on the carrier. This includes the bracket and 4 bolts seen in the picture below. Everything in this picture is included with the # DM15851-52.
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Spare Tire Carrier For a 8" Tall Trailer Frame That Holds A 4 Lug Or 5 Lug Bolt Pattern Up To 5-1/2"
The only spare tire carrier I can suggest for you is the Demco Spare Tire Carrier # DM15851-52. While this carrier is designed to fit frames up to 4" tall, you can source longer bolts to be able to attach it to your 8" tall frame. The Fulton Hi-Mount Spare Tire Carrier # FSTC1000301 will only fit frames up to 3" wide and 4" tall.
view full answer...
Does the Demco Spare Tire Carrier for up to 4" Trailer Tongue Have a Weight Capacity
The Demco Spare Tire Carrier for up to 4" Trailer Tongue part # DM15851-52 doesn't have a weight capacity and it's not common for spare tire carriers to have this either. The bolt pattern compatibility will help limit overloading. For example, the carrier works with any wheel/tire combo that has a bolt pattern up to 8 on 6-1/2". Therefore, so long as your bolt pattern is this or smaller you won't have an issue with capacity. I have attached the full list of bolt patterns below. 4 on 4" 5...
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Options for Trailer Tongue Mounted Spare Tire
Using the Stromberg Carlson Bike Bunk, # CC-275 for a spare tire carrier, but instead of attaching a bike rack to the 2" receiver you use the etrailer Hitch Mounted Spare Tire Carrier for 2" hitches, # e98ZR is a viable option. It sounds as if you have ruled out the following type spare tire carriers will working for your needs. But just incase, I will list out a few options to consider. The Demco Spare Tire Carrier for up to 4" Trailer Tongue, # DM15851-76 in black. Or, the Demco Spare...
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What Torque Should the Bolts of the Demco Vertical Spare Tire Carrier for Trailers Be Tightened To
I checked with my contact over at Demco and they say that the 1/2" bolts on the Demco Spare Tire Carrier for up to 4" Trailer Tongue - Silver # DM15851-52 should be torqued to 75-ft/lbs.
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Most Corrosion Resistant Trailer Frame Mounted Spare Tire Carrier
The Demco Spare Tire Carrier # DM15851-52 is only available in powder coated steel. The Fulton Hi-Mount Spare Tire Carrier # FSTC1000301 having a zinc coating is going to be our most corrosion resistant frame mounted spare tire carrier as we do not have an aluminum or stainless steel option.
view full answer...
Can Demco Spare Tire Carrier Work With Wood Deck
You can use the Demco Spare Tire Carrier # DM15851-52 on the wood deck of your tilt trailer. That would really be the best option as you can bolt it right onto the deck. The # DM15851-52 is silver but I also wanted to mention it is available in black with part # DM15851-76.
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Spare Tire Carrier Capable of Supporting a Wheel With a 5 On 5" Bolt Pattern
The Demco Spare Tire Carrier # DM15851-52 is going to be the closest spare tire carrier to the Fulton # FSTC1000301 that can accommodate a 5 on 5 bolt pattern. This would need to mount on top of the frame rather than offset to the side of the frame like the Fulton. Be sure to watch the video I have linked below.
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