What Does the 75D Mean in a Trailer Tire Size ST205/75D15
Updated 07/06/2016 | Published 07/05/2016
Question:
Whats the 75d mean. Need it for a trailer two axle 18 foot
asked by: Mike V
Expert Reply:
In a tire size the second number is the aspect ratio. The aspect ratio is the percentage of the sidewall height relative to the width of the tire. The width is the first number; in this case for # AM3S640DX the width is 205 mm. The sidewall is 75 percent of 205 mm.
The D is indicating the tire is a bias ply tire as opposed to a radial tire. The difference is in the orientation of the plies or belts in the tires' construction. On a radial they run straight across the tire whereas in a bias ply they run at an angle.
So if the size you have now is ST205/75-15 load range C and the bolt pattern of the wheels you have now is 5 on 4-1/2 then # AM3S640DX will work for you. It is rated for 1,820 pounds at 50 psi. I have included some helpful links on trailer tires and wheels for you 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
- Q&A: Comparing a 205/75D15 and 205/75R15 Trailer Tire
- Shop: Loadstar ST205/75D14 Bias Trailer Tire with 14" Galvanized Wheel - 5 on 4-1/2 - Load Range C
- Shop: Kenda Karrier KR53 ST205/75R15 Radial Trailer Tire with 15" Silver Mod Wheel - 5 on 4-3/4
- Shop: Kenda Karrier KR53 ST205/75R14 Radial Trailer Tire with 14" Silver Mod Wheel - 5 on 4-1/2
- Shop: Kenda Karrier KR53 ST205/75R14 Radial Trailer Tire with 14" Galvanized Spoke Wheel - 5 on 4-1/2
- Shop: Karrier ST205/75R14 Radial Trailer Tire with 14" Galvanized Wheel - 5 on 4-1/2 - Load Range C
- Shop: Karrier ST205/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 5 on 4-1/2 - Load Range C
- Shop: CE Smith Spare Tire Mount for Trailers - Steel - 4- and 5-Lug Wheels - 12-1/4" Long
- Shop: Trailer Hitch
- Search Results: trailer hitch
- Article: Trailer Wiring Diagrams
- Q&A: Lug Nut Torque Chart for Trailer Wheels
- Shop: Trailer Wiring
- Search Results: trailer tires and wheels
- Article: Brake Controller 7- and 4-Way Installation Kit (ETBC7)
- Video: Measuring To Choose The Right Trailer Axle
- Q&A: Installation Time for Blue Ox BX1128 Flat Tow Base Plate Kit for 2016 Jeep Grand Cherokee
- Q&A: Comparing Kenda KR03, KR35, And KR53 Tires
- Shop: Suspension Enhancement
- Video: Review of etrailer Trailer Hubs and Drums - Hub with Drum - AKHD-545-35-EZ-K
- Article: How to Measure Your Trailer Wheel Bolt Pattern
- Search Results: trailer wiring
- Q&A: Which is Better for Highway Use 4.80-12 or 5.30-12 Trailer TIres
- Search Results: trailer jack
- Shop: Brake Controller
- Article: How to Measure for Trailer Hitch Drop
- Video: Review of Kenda Trailer Tires and Wheels - Karrier KR53 ST205/75R14 Radial Nardo Gray Mod - KE89TJ
- Article: Wiring Trailer Lights with a 7-Way Plug (It's Easier Than You Think)
- Shop: Gooseneck Hitch
- Search Results: spare tire mount
on Trailer Tires and Wheels
