Should Utility Trailer Spare Tire be Same Size as Current Tires?
Updated 05/03/2018 | Published 05/02/2018
Question:
I have a utility trailer that has 2 each ST205/75D15 tires mounted on the trailer. I have a 3rd wheel that currently has mounted a 205/75R14 yes a 14 inch trailer setup. Bolt holes line up okay. Is it appropriate to use it for an emergency spare or should I buy 205/80D14 to mount or should I buy another 15 inch wheel and tire? Any other thoughts?
asked by: David W
Expert Reply:
I recommend having a spare wheel and tire that is the same size as the wheels and tires currently on your utility trailer; using a different size would create a situation where your suspension would be imbalanced, which you want to avoid even for a short-term situation. You also have different styles of tires on your trailer, and you'll want those to match up as well. Your current tires are bias, which you can tell by the "D" in the 205/75D15 size you referenced, while the 205/75R14 are radials, which does not have a sidewall as stiff as a bias tire.
You will need a wheel with the same bolt pattern as your current wheels, and if you are unsure how to find this, I've added a link to a help article on how to measure the bolt pattern of your wheels. The most common bolt pattern is 5 on 4-1/2" and for that I recommend taking a look at the Loadstar # AM3S640DX, which is a white spoke wheel with a 5 on 4-1/2" bolt pattern and 205/75D15 tire with a load range of C for 1,820 lb maximum capacity at 50 psi.
I've added a link to a video review of this wheel/tire combo as well as a link to each of our 15" wheel and ST205/75D15 tire combos for you to check out as well.
Product Page this Question was Asked From
Loadstar ST205/75D15 Trailer Tire with White Spoke Wheel - 5 on 4-1/2
- Trailer Tires and Wheels
- Tire with Wheel
- Bias Ply Tire
- Load Range C
- 205/75-15
- 15 Inch
- M - 81 mph
- 5 on 4-1/2 Inch
- Steel Wheels - Powder Coat
- Kenda
more information >
Featured Help Information
Miscellaneous Media
Continue Researching
- Shop: Kenda Karrier KR53 ST205/75R15 Radial Trailer Tire with 15" Black Mod Wheel - 5 on 5
- Search Results: 7 pin to 4 pin
- Q&A: 2023 Toyota Tacoma Is Not Detecting Trailer - What Can I Do?
- Q&A: Troubleshooting Backup Camera Not Powering on When Hooked up to LED Trailer Lights
- Shop: Rambler ST205/75R15 Trailer Tire with Black Vesper Mod Wheel - 5 on 4-1/2
- Shop: 7-Way to 4-Way/5-Way Trailer Adapter for Vehicles with Lamp-Out Sensors Towing Trailers with LEDs
- Shop: Optronics Red and Amber Trailer Reflector Kit - Adhesive Backing - Rectangle - Qty 4
- Shop: Replacement High Temperature Air Hose for ARB Compressor Kits
- Shop: ARB Pump Up Air Compressor Hose Kit - 23'
- Shop: 2" Lubed Dust Cap & Rubber Plug - 1.99" x 1.40" x 1.18" - Qty 1
- Article: Trailer Tire Sizing
- Q&A: What is the Speed Rating for Loadstar ST175/80D13 Bias Trailer Tire and Wheel Combo # AM3S030
- Q&A: Can Tire Size 175/70-13 be Used on Trailer
- Q&A: How To Determine the Weight Capacity For a Trailer Axle with Spindle Dimensions that Match 42
- Search Results: 13x45 rim
- Search Results: 175/70r13
- Search Results: 175 80r13
- Video: Feature Review Loadstar ST175/80D13 Bias Trailer Tire with 13" Galvanized Wheel
- Q&A: Torque Specification for 12 Inch Wheel with 4 Lug Nuts on Boat Trailer
- Shop: Trailer Hitch
- Article: Trailer Wiring Diagrams
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Search Results: trailer hitch
- Shop: Trailer Wiring
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Shop: Suspension Enhancement
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: trailer wiring
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
on Trailer Tires and Wheels
