What is the Difference Between ST205/75-14 and ST215/75-14 Size Tires
Question:
What is the difference between for instance, an ST205/75D14 and an ST215/75D14 in size? And load capacity, etc.And does the R on a trailer tire stand for radial? Thanks Very Much in advance.
asked by: Brian
Expert Reply:
The main difference between a ST205/75-14 size tire like the Contender # AC14R45SM and a ST215/75-14 size tire like the Taskmaster Provider Item # TTWTR21514 is that the larger number is a slightly larger size.
The 205 has a section width of 7.99" and an outer diameter that measures 26.14" while the 215 has a section width of 8.5" and an outer diameter of 27". Each tire size has a variety of load ranges. Although there isn't a "set" weight capacity of a load range, you can find the load range of each tire on the product page for our site. For example, part # TTWA14RWS is a load range C which means the max load is 1,760 lbs at 50 psi while a load range D would have a capacity of 2,200 lbs at 65 psi. You always want to keep the cold psi of your tires at what is recommended by the manufacturer.
Seeing an R in the size of a trailer does tires indicate that it is a Radial tire. If the tire has a D that means it is Bias. Radial tires are better for highway use because they have a little more flex in their sidewalls which allows them to run cooler at higher speeds. Although Bias can be used on the highway, since they have a sidewall that is more stiff they are better used for off-road purposes like agricultural.
I have linked a few helpful articles that you can check out which go into some more details on trailer tires and how to use the numbers on the sidewall to determine their size.
Products Referenced in This Question
Provider ST215/75R14 Radial Trailer Tire - Load Range C
- Trailer Tires and Wheels
- Tire Only
- Radial Tire
- Load Range C
- 215/75-14
- 14 Inch
- M - 81 mph
- Taskmaster
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Jay
10/3/2024
The current tires on my camper have 4-ST205/75-14 can I use ST215/75-14 without any problems? Thank You