Will Tie Down Spare Tire Mount Hardware Fit a 4" Thick Trailer Frame?
Updated 09/12/2025 | Published 08/27/2025
Question:
My Shorelander boat trailer frame is 6 inches tall and 4 inches thick. Im a little concerned the bolts wont quite be long enough.
asked by: Steve W
Expert Reply:
Hey Steve!
The bolts that come with the Tie Down Spare Tire Mount # TD86FR are 1/2”-13 x 4-1/2” so you'll definitely be pushing the limits with a 4" wide frame. The nice thing is that you can easily find longer bolts at your local hardware or home improvement store.
Most spare tire mounts are designed for trailer frames that are up to 3" wide, so you'll have to get replacement hardware for basically any spare tire kit you end up going with.
Do you already have the spare tire as well?
Product Page this Question was Asked From
Tie Down Spare Tire Mount - 4, 5, and 6 Lug Wheels - Galvanized Steel
- Spare Tire Mount
- Frame Mount
- Bolt-On
- 4-Bolt
- 5-Bolt
- 6-Bolt
- Trailer
- Marine Grade Finish
- Tie Down
more information >
Featured Help Information
Instructions
Miscellaneous Media
Continue Researching
- Search Results: spare tire mount
- Video: Review of Tie Down Spare Tire Mount - Frame Mount - TD86FR
- Search Results: 1/2~20 lug nuts
- Q&A: Recommended Spare Tire Mount for a Magic Tilt Tandem Axle Boat Trailer
- Search Results: obd
- Search Results: net
- Search Results: storage rack
- Search Results: cargo net
- Search Results: st205 75r14
- Shop: Tie Down Spare Tire Mount - 4, 5, and 6 Lug Wheels - Galvanized Steel
- Video: Breaking Down the Offset Trailer Spare Tire Mount by Dutton-Lainson
- Shop: Kenda Karrier KR35 ST205/75R15 LRC Radial Trailer Tire w/ 15" Nardo Gray Mod Wheel - 5 on 4-1/2
- Shop: Transmission Cooler
- Shop: Tie Down Side-Mount Spare Tire Mount - 4 and 5 Lug Wheels - Galvanized Steel
- Shop: CE Smith Offset Spare Tire Mount - Galvanized Steel - 4- and 5-Lug Wheels
- Shop: DeeMaxx Trailer Wheel XL Lug Nut - Chrome - 1/2" - Qty 1
- Shop: Offset Trailer Spare Tire Mount by Dutton-Lainson
- Shop: Demco Spare Tire Mount for Bolt-On Swivel Jack - Silver
- Q&A: Thickness or Rear Backing Plates on Tie Down Spare Tire Mount
- Q&A: Will The CE Smith Spare Tire Mount CE27201 Work With A 6-Lug Wheel?
- Q&A: How Much Weight can the Tie Down Spare Tire Mount - 4, 5, and 6 Lug Wheels Support?
- Q&A: Spare Tire Mount For Scout Boat Trailer
- Q&A: Availability of Spare Tire Mount for 2025 Trailer King Boat Trailer With 6.5" Tall Frame
- Q&A: Recommended Spare Tire Mount for a Carry On Trailer
- Article: Trailer Wiring Diagrams
- Shop: Trailer Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Trailer Wiring
- Article: How to Measure for Trailer Hitch Drop
- Shop: Suspension Enhancement
on Spare Tire Mount
Jon G.
9/12/2025
Hey Steve, Did you manage to find longer bolts for your trailer frame? I'm curious to know how it worked out for you, as it could help others with similar trailer setups.