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

Spare Tire Lock

Part Number: FSTL0603
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$26.50
Retail:$58.99
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Spare Tire Locks
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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. Great 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 1-800-940-8924 for expert service.
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  • Reviews (150)
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  • Videos (2)
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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 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 Satisfaction Score:


Customer Reviews

Spare Tire Lock - FSTL0603

Average Customer Rating:  4.6 out of 5 stars   (150 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.

by:

The locks I ordered are exactly what I wanted, now I don’t need to worry about my spare tire getting stolen, oh and very easy to install. Thank you etrailer.com



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.



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.



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.



by:

I have not had time to install the lock or see its use, so not much information to provide for you.



by:

Piece of junk…

Etrailer Expert

Katrina D.

2/28/2024

That's not good to hear at all. What's wrong with it? Is it not working like expected? Did it arrive in bad condition? Can you please elaborate on what makes it junk?



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.



by:

Excellent customer service ! Items as described. Quick shipment.



by:

Works as promised but my particular wheel has deep narrow sockets and did not allow attachment from the outside. Attaching from the inside solved the problem with equal security. Simple and effective. Love it.



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.

Daniel B.

2/11/2018

I am still pleased with the lock. I love the peace of mind, knowing that my spare cannot be easily stolen.



by:

They work as advertised. They are holding up great.



by:

Really like these spare tire locks. Well built and easy to use. I recommend
this lock, and would buy again.

Wayne G.

2/25/2018

Working great. Easy to use.



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.



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.



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!



by:

My Pics



by:

Due to the virus and not using the trailer much, the lock is still there and works OK. I really can't give a good review but so far so good. All the products I have bought from you have been fine, with the exception of the previuos wheel lock that was not a good design but you guys replaced for free!



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!



by:

I have another just like it on a different trailer. Wished I could have gotten it keyed alike, however.

Robert C.

10/9/2020

works great, but would be better if keyed alike. I have two, but need more.



by:

Could not leave rubber plug in that seals out water stud hit plug would not go alway on. Have to work with lock to get on & off does not fit very well. You have to make sure properly locked before removing key. Used this on my boat trailer



by:

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

Ryan

11/16/2022

Still going strong. Ive never had to tighten it after the initial installation and the trailer has been on several trips and some very rough trips.



by:

This has been one the best investments I have made. My spare is safe and yet so easy for me to access. I give this lock a 5 star rating. It'd quality made and well worth the price.

James

9/8/2019

This spare tire lock has been outside in the weather ffg or one year. It is still holding up. It has no wear and tear on it at all. The product is still doing the job and still a very good investment. A quality product!



by:

Shipping was perfect! The brack was as described and worked as planned. It came with two bolts and a lock, which slid over the bolt to prevent someone from just unbolting and taking the tire. I bought a second lock for the other side. Call me paranoid. It isn’t much of a deterrent but the more I can aggravate the bad guy the better. Thanks etrailer for providing these needed products at a fair price.



by:

Very satisfied with service and product.



by:

Lock cover interferes with my aluminum wheel after placing nut on stud and tightening. Product is not usable for my spare wheel. Getting a standard lock and cable instead to secure my spare wheel/tire.


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Show More Reviews

See what our Experts say about this Tow Ready Spare Tire Locks

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    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.
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    Lock # FSTL0603 will fit both spare tire carriers # FSTC1000301 and # DL22120. It is designed to fit 1/2 inch wheel studs.. For a spare tire carrier I prefer the Dutton-Lainson carrier # DL22120 because it can fit taller frames (up to 3x5 inch) should you ever need it to and Dutton-Lainson does make a quality product.
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    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.
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  • Horse Trailer Spare Tire Carrier Recommendation
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  • Wheel Lock for Spare Tire and 1/2"-13 Threaded Stud
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  • Recommended Lock For Brophy Rigid Mount Spare Tire Carrier BR56VR
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  • 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.
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  • Spare Tire Mount Recommendation on a Trailmaster Tritoon Boat Trailer
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  • Can Wheel Lock be Used with Dutton Lainson Spare Carrier
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  • Compatibility of Tow Ready Spare Tire Lock with Fulton Hi-Mount Spare Tire Carrier
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  • Does the Wheel Need to Be Removed While Not in Use on the Dutton-Lainson Spare Tire Carrier
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  • Recommended Spare Tire Lock Compatible With Demco Spare Tire Carrier DM15853-52
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  • 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.
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  • 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...
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  • What is Fulton Lock # FSTL0603 Made Of and How To Prevent Theft of Fulton Tire Carrier # FSTC1000301
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  • Bumper Mount Tire Carrier Needed for a 14 Tire
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  • 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.
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  • Recommended Lock for Fulton Hi-Mount Spare Tire Carrier
    Yes, the BOLT Spare Tire Locks like part # BL5922986 will work with either the Fulton Hi-Mount Spare Tire Carrier part # FHDSTC0101 or the Fulton Hi-Mount Spare Tire Carrier part # FSTC1000301 as they both use 1/2-20" carriage bolts to secure the wheel.
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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jeff D
Expert Research:
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Employee Reno H
Expert Research:
Reno H
Employee Andrew L
Video by:
Andrew L
Employee Randy B
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Employee Wilson B
Updated by:
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