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  1. Spare Tire Locks
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  3. Universal Application Lock
  4. Keyed Unique
Spare Tire Lock

Spare Tire Lock

Item # FSTL0603
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Spare Tire Locks
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Tow Ready Spare Tire Locks - FSTL0603
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Fits over wheel studs up to 9/16" in diameter and features a removable plug to allow longer wheel studs to protrude. Positive locking feature prevents lock from turning. Ideal for use with U-bolt-style carriers. Lowest Prices for the best spare tire locks from Tow Ready. Spare Tire Lock part number FSTL0603 can be ordered online at etrailer.com or call 1-800-496-5010 for expert service.
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  • Reviews (120)
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Tow Ready Spare Tire Locks - FSTL0603

  • Universal Application Lock
  • Tow Ready
  • Keyed Unique

Fits over wheel studs up to 9/16" in diameter and features a removable plug to allow longer wheel studs to protrude. Positive locking feature prevents lock from turning. Ideal for use with U-bolt-style carriers.


Features:

  • Removable plug allows for longer wheel studs
  • Locking tab's positive locking feature keeps lock from turning
  • Popular model is perfect for U-bolt-style spare-tire carriers


Specs:

  • Fits over wheel studs up to 9/16" in diameter


STL0603 Spare Tire Lock




California residents: click here


Video of Spare Tire Lock

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Fulton Spare Tire Lock Review

Today we're going to be taking a look at the Fulton Spare Tire Lock. This is part number FSTL0603. This is a metal construction spare tire lock designed to go right over your current lug nuts and secure it in place. We've got our boat trailer spare here. We'll be putting it on in just a second so you can see how it works. It comes with two keys. It's got a removable base.

This is going to accommodate all the way up to a 9/16 of an inch wheel stud and for the longer wheel studs, the cap's removable so that stud's going to be able to come right through. We won't have any worries about getting to a point to where we can't get our lock onto our tire. There's a locking tab here on the rear. When installed that's going to prevent this lock from moving or turning. It works great with both the wheel studs and with the U-bolt style spare carriers so you won't have a big issue with getting this to work on most of your spare tire setups. As far as installing it goes, we're just going to remove one of our lugs. With that off, we'll separate our rear plate.

That goes right over the stud and our lug nut goes right back on. It's got a cone pattern in there which is great. It allows that lug nut to seat right in there where we want it and we just tighten it back down. Now we'll take our lock and cover, place it on, turn the key and just like that our spare tire is secured to our trailer. We're not going to have to worry about it missing. Now that we've gone over all the features and we've seen how it works, that will complete today's look at the Fulton Spare Tire Lock, part number FSTL0603.

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Customer Reviews

Spare Tire Lock - FSTL0603

Average Customer Rating:  4.7 out of 5 stars   (120 Customer Reviews)

Fits over wheel studs up to 9/16" in diameter and features a removable plug to allow longer wheel studs to protrude. Positive locking feature prevents lock from turning. Ideal for use with U-bolt-style carriers.

- FSTL0603
by:

I ordered two mounted tires and wheels and two Fulton spare tire carriers. The tires were shipped in two different boxes. The spare tire carriers were put one each in the box containing the tire/wheels. When I opened the boxes, both of the spare tire carrier packages had come open in transit and the contents were scattered inside the tire boxes. One was fine and all parts were there and in the second, the keys for the spare tire carrier lock were missing. I called etrailer and told the representative, Ericka, what occurred. They were super helpful, professional and friendly. etrailer is sending me a replacement. Fantastic customer service! I highly recommend this company!



- FSTL0603
by:

It arrived a few days after I ordered. Installed quick. It’s to deter a quick theft. If a person really wanted to take the tire it’s not going to stop a large hammer.



- FSTL0603
by:

I have an odd single 1/2" 13 pitch stud for my trailer's spare tire mount. I used a nylock nut nut to mount the spare. I purchased this lock to keep it secure. It appears to be working fine. I don't know that it is as secure as a traditional locking lug nut someone would have to work at it to get it off without the key.



- FSTL0603
by:

Very useful locking device.the only flaw?the removable rubber plug should be higher that way it will protect the locking nut plus it will detract attention from someone else actually seeing how the lick works and maybe try to pry it open



- FSTL0603
by:

I think this will do the job. With the lugnut tightened down, you cannot turn this device with your hands, and even if you could turn it, I don't think you could get the lugnut off. Also, I like how the cover is a bit loose and yet covers the nut completely. My bolt did protrude slightly, so it is good that the rubber cover is removable for the longer bolts.



- FSTL0603
by:

These locks are low profile, easy to install and seem quite sturdy. I am very happy with the product and service.



- FSTL0603
by:

always the best place to go for trailer items. Quick shipment, good prices...



- FSTL0603
by:

At first when I received the item it look pretty well made. But when I was installing it I noticed a crack on one of the hardware. So I called etrailer back and spoke with Teresa on customer service. She just ask few questions and she immediately send me a brand new one. That’s 5 star on customer service. And she even told me not to return the defective item. So etrailer Big thumbs up on that. Now hope this product does its job from thieves.



- FSTL0603
by:

Called my order in to etrailer and it was shipped out as promised. Really pleased with their prompt service. Thanks



- FSTL0603
by:

Happy with the looks and function of the spare tire lock on my Maxey utility trailer. Design is innovative and I had no problems installing it.



- FSTL0603
by:

Great product to secure your spare tire from wondering eyes



- FSTL0603
by:

Great product, good price, perfect size, easy to install, installed it on my boat trailer spare now I don't have to worry about the tire being removed without a struggle.



- FSTL0603
by:

Heavy duty!



- FSTL0603
by:

My trailer isn’t going anywhere…unwante d.



- FSTL0603
by:

Been on my trailer for a year. Still looks new and has not loosened up at all. Still doing its job.



- FSTL0603
by:

Looks good, fits good, no problems at all. Good product



- FSTL0603
by:

A perfect lock for a boat trailer spare tire.



- FSTL0603
by:

This is what I was looking for. It will work just fine on my trailer that set in the back field were their is no one to watch at all time. Once I put it on I hope I never take it off. Thank You etrailer.



- FSTL0603
by:

works well


Comments
Mine has held up well. I keep the spare covered and it’s still looking and operating like new.
JohnG - 12/30/2021


- FSTL0603
by:

I have not used the tire lock but looks like it will do the job.



- FSTL0603
by:

My Pics



- FSTL0603
by:

Great product. Great service. Quick del ivery


Comments
Good
Joanne - 10/21/2021


- FSTL0603
by:

First of all the packaging this item arrived in was open on one end but the item looked fine, no scratches, dings or signs of wear. I carried it outside to my driveway and removed 1 of the 2 lug nuts from my trailer spare tire mount, I placed the smaller back half of the spare tire lock over the lug and hand tightened the lug nut until it made contact and seated against the spare tire. I then placed my 4-way lug wrench over the lug nut and gave it a free spin. The free spin was only about 1 and 1/2 spins since I had already hand tightened the lug nut. I began to turn the lug wrench by hand, 1/2 turn, feeling no resistance so I turned another 1/2 turn, still no resistance. On the 3rd 1/2 turn and still feeling little to no resistance, the back half of the spare tire lock spread and cracked which would not allow the locking cap to fit over it. after further inspection of the crack, I could see this was made of a soft pot metal (see uploaded image) and not of a stronger metal such as steel. This item broke under minimum tension, no way near the type of tension/torque one would use to install a lug nut on a mounted tire you would be driving on. I feel my money was wasted on this particular product. I have always been satisfied if not overjoyed with all of my past purchases from etrailer.com and am not blaming etrailer.com for this products shortcomings.



- FSTL0603
by:

Lock fits and secures the spare wheel to the camper perfectly. I am very pleased with the product. As usual, I can't say enough about the customer service I have received. I will certainly continue to buy from etrailer. Thanks again.


Comments
I am still pleased with the lock. I love the peace of mind, knowing that my spare cannot be easily stolen.
Daniel B - 02/11/2018



- FSTL0603
by:

At first I was a bit dismayed that the tire/wheel combo I ordered was unavailable. But I was offered a suitable substitute and the entire order was rapidly dispatched and received in a timely manner. I was very pleased with my order and the various items... so much so I immediately decided to order another wheel/tire combo for one of my trailers and use the two nice new wheels/tires intsead and use one of the old originals as the spare! Great products, fast service, super helpful customer service and they know their products! Thanks etrailer! I'll be doing business with you again real soon!


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Show More Reviews

Ask the Experts about this Tow Ready Spare Tire Locks



  • Spare Tire Lock for Jeep 2013 Wrangler Unlimited
    If the wheel stud of the spare tire carrier is no larger in diameter than 9/16 of an inch, the Fulton Spare Tire Lock you mentioned, part # FSTL0603 should work just fine for the spare tire on your Wrangler Unlimited.
    view full answer...
  • What Wheel Stud Diameters Are the Fulton and Master Lock Spare Tire Lock Designed For
    The Fulton # FSTL0603 is constructed from hardened steel and fits on wheel studs up to 9/16" in diameter.
    view full answer...
  • How Does The Fulton Spare Tire Lock Part # FSTL0603 Work
    The Fulton Spare Tire Lock, part # FSTL0603, has a tab that is placed behind the lug nut of your spare tire and then the lock is placed over the lug nut. The enclosed and locked lug nut prevents the wheel from being stolen or removed without a key. Part # FSTL0603 works great for open-ended lug nuts and will only work with closed end lug nuts that are less than 1 inch tall. I took some pictures of part # FSTL0603 on a wheel to demonstrate how it works.
    view full answer...
    Image 1 for Image 2 for
  • Horse Trailer Spare Tire Carrier Recommendation
    It sounds like you are looking for something like the Spare Tire Carrier # 413200 as it fits what you described very closely. For a lock you would want the part # FSTL0603.
    view full answer...
  • Can the Offset Trailer Spare Tire Carrier # DL22120 be Mounted Horizontally
    As long as you have the necessary clearance on your trailer to fit your spare tire onto this Offset Trailer Spare Tire Carrier, part # DL22120, and you secure it well you should have no problem installing this # DL22120 in any direction that you wanted. You may also be interested in purchase a Spare Tire Carrier Lock, part # FSTL0603.
    view full answer...
  • Will Fulton Spare Tire Lock # FSTL0603 Fit on Fulton Hi-Mount Spare Tire Carrier # FSTC1000301
    Yes, the Fulton Spare Tire Lock, part # FSTL0603, that you have referenced, will fit on the Fulton Hi-Mount Spare Tire Carrier, part # FSTC1000301. The bolts that are used to hold the wheel onto the Fulton spare tire carrier are 1/2-inch size bolts. The Fulton spare tire lock will fit on a wheel stud up to 9/16-inch diameter.
    view full answer...
  • Can Spare Tire Carrier Be Mounted On Trailer Wall
    From the photo you sent, it looks like you have aluminum trailer walls, so the first thing you will want to consider is the strength of the walls. Since the Offset Trailer Spare Tire Carrier, part # DL22120 is designed to be mounted on a trailer tongue or frame, you will want to make sure that the location you choose is strong enough and able to handle the weight. You will want to consider strengthening the wall by reinforcing with a metal plate on the inside of the wall between the brackets...
    view full answer...
  • Can You Just Buy The Lock?
    Yes just the lock portion of this is available as Spare Tire Lock part # FSTL0603 . This is designed to work on any 1/2" spare tire stud. The first portion of it will go behind the lug nut then the lock portion will fit over it to secure it. I've included the video I did on it to help you see exactly how to install it.
    view full answer...
  • Will The Trailer Spare Tire Carrier DL22128 Move Around While Driving
    When you tighten the two nuts on the studs of the Trailer Spare Tire Carrier # DL22128 you were looking at, it will squeeze the tire against the frame which will keep it secure and won't allow it to slide back and forth. I wouldn't hesitate to use this product on my trailer, and with a 4.8/5 stars from our customers I can confidently say it will be a very reliable option to transport your spare tire. Regarding areas for mounting the U-bolt, the most common location is on the left front...
    view full answer...
    Image 1 for Image 2 for
  • Spare Tire Lock Recommendation for Toyota Land Cruiser
    You'd have to go with a spare tire lock like the part # FSTL0603 as the BOLT part # BL5922986 will only key to a Jeep style of key.
    view full answer...
  • Does the Wheel Need to Be Removed While Not in Use on the Dutton-Lainson Spare Tire Carrier
    I checked with my contact at Dutton-Lainson and unfortunatly neither they nor we have a photo of the Trailer Spare Tire Carrier and Dolly Bracket by Dutton-Lainson part # DL22144 installed and in use on a trailer at this time. With that being said the carrier/tire does not need to be removed while not in use. The tire can simply be left on the carrier until the time in which it is needed arises. The above carrier/dolly works with most 8"-12" wheels that have either a 4 or 5 bolt pattern....
    view full answer...
  • Can I Get My Spare Tire Locks Keyed Alike
    We do have a spare tire lock that can be keyed alike, but the Tow Ready Spare Tire Lock # FSTL0603 cannot be keyed alike. Our etrailer.com Spare Tire Lock # e98892 can be keyed alike. Just click on the keyed alike option and choose the quantity that you would like before adding this item to your cart.
    view full answer...
  • Recommended Spare Tire Lock for Trailer
    The Spare Tire Lock # FSTL0603 only fits lugs up to 9/16 inch. The 3/4 inch you referenced will be too large. To lock the spare you will leave one of the bolt off and then use the etrailer Spare Tire Lock for 1/4" to 7/8" Thick Rims - Keyed Alike # e98892 thru the carrier and the wheel. The lock stud diameter will be 1/2 inch and yet the ability to tighten and lock will not be an issue with the other bolts in place.
    view full answer...
  • Need Lock to Keep Thieves from Stealing the Spare Tire on my Honda CRV
    As long as the wheel stud of your Honda CRV's spare tire carrier is no larger in diameter than 9/16 of an inch and the lug nuts are less than 1 inch tall, the Fulton Spare Tire Lock, # FSTL0603, will work for you. This lock has a tab that is placed behind the lug nut of your spare tire and then the lock is placed over the lug nut. The enclosed and locked lug nut prevents the wheel from being stolen or removed without a key. If you have 1/2 inch diameter wheel lugs, another option you may...
    view full answer...
  • Recommend Bumper Mounted Spare Tire Carrier For A 16 8-Lug Wheel And Tire
    Yes, the Brophy Rigid Mount Spare Tire Carrier # BR56VR would be able to fit your 16" dually wheel/tire and is compatible with your 8-lug bolt pattern. For extra security you can also use the Spare Tire Lock # FSTL0603 to prevent anyone from walking off with your spare.
    view full answer...
  • Wheel Lock for Spare Tire and 1/2"-13 Threaded Stud
    We have spare tire lock # FSTL0603 that you could use. It works with wheel studs up to 9/16 inches. I have included a link to a video review of this lock for you.
    view full answer...
  • Spare Tire Mount Recommendation on a Trailmaster Tritoon Boat Trailer
    The best place to mount your spare tire on your Trailmaster Tritoon Boat Trailer is on the frame just opposite of your trailer jack. I recommend using the CE Smith Offset Spare Tire Carrier # CE27310G which will fit trailer frames up to 3-1/2 inches wide and 4 inches tall. You may also want to consider a lock like the Spare Tire Carrier Lock # FSTL0603 to deter theft.
    view full answer...
  • Recommended Spare Tire Carrier For 5 On 4-3/4 Inch Bolt Pattern
    For your PJ 14 foot trailer with the spare tire 5 on 4-3/4 inch bolt pattern, I recommend the Ultra-Fab Folding Spare Tire Carrier for Trailers and RVs - Bumper Mount # UF15-954730 which is a confirmed fit for your bolt pattern and will fit 4 inch wide box bumpers or frames. You may also want to consider a spare tire lock like # FSTL0603.
    view full answer...
  • Recommended Lock For Brophy Rigid Mount Spare Tire Carrier BR56VR
    To secure your spare tire to the Brophy Rigid Mount Spare Tire Carrier # BR56VR I recommend using the Tow Ready Spare Tire Lock # FSTL0603 which will go over the stud and lock the nut on to the trailer. The metal construction of the # FSTL0603 makes it so it cannot be just broken off of the carrier. I included videos for both of the products mentioned for you to take a look at.
    view full answer...
  • Recommended Spare Tire Lock Compatible With Demco Spare Tire Carrier DM15853-52
    I have another option for you, but unfortunately we do not have any locking lug nuts that fit the Demco Spare Tire Carrier # DM15853-52 you were looking at. This carrier has threaded studs that are 1/2" in diameter with fine threads which are different than standard 1/2" x 20 studs used on a trailer so a standard lugnut will not work. To lock you spare tire to the carrier I recommend using the Spare Tire Lock # FSTL0603 has a tab that gets installed behind the nut and then the cover will...
    view full answer...
  • What is Fulton Lock # FSTL0603 Made Of and How To Prevent Theft of Fulton Tire Carrier # FSTC1000301
    Yes , the Fulton Spare Tire Lock, part # FSTL0603, is made of a hardened steel, which is very hard to cut or break. You can install the Fulton Hi-Mount Spare Tire Carrier, part # FSTC1000301, using a Loctite Threadlocker, part # LT37423. This is a liquid that will lock the nuts to the bolts and prevent anybody from removing them. To disassemble the nuts and bolts will require the use of heat. Making it time consuming for the thieves to take your item is the best deterrent against theft.
    view full answer...
  • Standard 3-1/2" By 1-1/2" Stake Pocket Tie Down Anchors For Flat Bed Car Hauler Trailer
    The Stake Pocket Tie-Down Anchor # T355 measure 3-1/2" by 1-1/2". If you measure again (sand down if necessary), you probably actually have the standard 3-1/2" by 1-1/2" opening and not 3-1/2" by 1-3/8", in which case this would work well for you. For a spare tire carrier that would fit the standard 3-1/2" by 1-1/2" stake pockets we have the Buyers Products Stake Pocket Spare Tire Carrier # 3375201012 or the Brophy Trailer Stake Pocket Spare Tire Carrier - Black Powder Coat # SPTC. Both...
    view full answer...
  • Lock for Use with Trailer Spare Carrier # CE22011Z-11050-2
    For just the lock you are looking for with the # CE22011Z-11050-2 you'd want the # FSTL0603.
    view full answer...
  • Keyed Alike Wheel Locks for Triple Axle Trailer
    We do carry wheel locks which can be keyed alike, but they are not locking lug nuts. The Blaylock EZ Trailer Wheel Lock for wheels that are 15" - 20" # BLEZ-302 can be keyed alike by choosing that option in the "Keyed Alike" drop-down menu. It is not for spare tires however, so you would need an extra key for one such as the # FSTL0603. The upside is that you would not have to use seven of the Blaylock Wheel Locks which is going to save you some time when it comes to locking and unlocking...
    view full answer...


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Info for this part was:

Employee Mike L
Expert Research:
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Employee Reno H
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Employee Andrew L
Video by:
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Employee Randy B
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