Correct Replacement Size for a 7.75-15 Trailer Tire
Updated 06/05/2019 | Published 06/04/2019
Products Featured in This Question
Question:
I see an explanation for a modern tire size in your threads that is as follows.... The closest modern tire size to the 7.75-15 would be ST205/75-15, available in bias ply load range B as part # AM1ST91 or load range C as part # AM1ST92. It is also available in radial, load range C as part # AM10244. The ST205/75-15 would about the same diameter and 1/2 inch wider than the 7.75-15. Someone is telling me to use this size..... 215/75 r14 × 1 will it be ok or should I look for the above and is the ply range B or C equivalent to 6 or 7? THANK YOU
asked by: Ethney M
Expert Reply:
The 215/75-14 tire you referenced will not work in place of a 7.75-15 tire because they use a different diameter wheel. Therefore, the 205/75-15 would indeed be your best option for replacement. This size would have the closest dimensions to the old 7.75-15 tire you have now which means there would be little to no chance for fit issues.
For a 205/75-15, I recommend the Karrier ST205/75R15 Radial Trailer Tire part # AM10244 for load range c (1,820 lbs per tire) or part # AM10245 for load range d (2,150 lbs per tire). These tires have a radial construction which means they will be better for highway use than a bias ply. The ply rating is no long used so as long as the total weight of the trailer is under the total weight capacity of your tires you will be good to go.
Product Page this Question was Asked From
Karrier KR03 ST205/75R15 Radial Trailer Tire - Load Range C
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range C
- 205/75-15
- 15 Inch
- M - 81 mph
- Kenda
more information >
Continue Researching
- Shop: Karrier KR03 ST205/75R15 Radial Trailer Tire - Load Range C
- Shop: Karrier ST205/75R15 KR03 Radial Trailer Tire - Load Range D
- Video: Hands-On Review with the Big Truck Big RV Trailer Tongue Weight Scale
- Shop: Kenda Karrier KR53 ST205/75R15 Radial Trailer Tire with 15" Black Mod Wheel - 5 on 4-1/2
- Shop: Kenda Karrier KR53 ST205/75R15 Radial Trailer Tire with 15" Black Aluminum Wheel - 5 on 4-1/2
- Shop: Big Truck Big RV Tongue Weight Scale for Trailers - 1,000 lbs - Fixed
- Shop: Electric Trailer Brake Assembly - 12" - Right Hand - 5,200 lbs to 7,000 lbs
- Shop: Electric Trailer Brake Assembly - 12" - Left Hand - 5,200 lbs to 7,000 lbs
- Q&A: What is the Offset of a Trailer Wheel
- Article: Trailer Lighting Requirements
- Shop: Brake Controller
- Shop: Trailer Wiring
- Video: Redarc Tow-Pro Liberty Brake Controller Review RED24FR
- Video: Review of Redarc Trailer Brake Controller - Tow Pro Elite Proportional With Wiring Harness - RED42CR
- Shop: Trailer Hitch
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Search Results: trailer hitch
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Article: Trailer Wiring Diagrams
- Q&A: What is the Difference Between a Class II and a Class III Hitch?
- Search Results: trailer tires and wheels
- Search Results: trailer wiring
- Q&A: What is the Difference Between a 4-Way and 7-Way Trailer Connector
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Video: Fifth Wheel Towing Made Simple with Daniel
- Video: How to Choose a Trailer Brake Controller
- Search Results: trailer jack
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Search Results: spare tire mount
on Trailer Tires and Wheels
