What does st mean on trailer tires?
Special Trailer (ST) Trailer tires are developed specifically for use on travel trailers, pop-up campers, boat trailers and fifth wheel trailers. Designed to deliver on-highway service for towed trailers, ST-sized tires are not intended to be used on cars or light trucks. Tires beginning with a ST (for example ST175/80R13) indicate a Special Trailer tire and should only be used on car, boat or utility trailers.Tires beginning with a ST (for example ST175/80R13) indicate a Special Trailer tire and should only be used on car, boat or utility trailers. LOAD INDEX AND SPEED RATING. Example: P225/60/R16 94V. The load index and speed rating, or service description, are the numbers that follow the tire size.Special Trailer Tires (ST Tires) ST or Special Trailer tire have been designed specifically for use with all types of trailers. Because of their design characteristics, ST tires are most often the type of tire that is fitted on most small to medium-large sized RV trailers.The difference between the two trailer tire sizes is that the letter D in the first size you listed ST205/75D15 stands for bias ply and the letter R in the tire size that they put on your vehicle stands for radial.
How many ply should a trailer tire be?
Load Range C: 6-ply rating, a common choice for medium-sized trailers. Load Range D: 8-ply rating, suitable for larger trailers or heavier loads. Load Range E: 10-ply rating, often used for heavy-duty trailers or commercial applications. Some drivers with half-ton trucks also prefer to use a 10-ply tire for increased towing capacity. Higher load carrying capacity tires make towing easier because their stiffer tires help stabilize loads and reduce sway at speed.For hard-core towing and serious off-roading, 12-ply tires are better since they have the strength to carry the extra weight.A standard 8-ply tire can have the load carrying capacity of about 2600 lbs per tire. Ply Tires (with Load Range E) are built to take more load; thus, it is suitable for heavy-duty trucks, commercial trucks, and vehicles that are used for towing frequently.
Are trailer tires stronger than regular tires?
Fundamental design differences trailer tires prioritize completely different performance characteristics. Their primary function is supporting heavy loads with reinforced construction and stiffer sidewalls. They’re engineered to track straight and resist swaying, not to handle sharp turns or sudden direction changes. Lt tires also have extra material in the sidewall and under the tread that protects the tire from damage. In the other hand, lt tires won’t ride as smooth, be as fuel efficient or last longer than a regular p-metric (passenger)tire.
Which trailer tire lasts the longest?
Radial tires tend to last longer overall and are less likely to develop flat spots when parked for extended periods of time (some trailers are parked over the winter). Radial tires perform well at highway speeds, dissipate heat better, and offer lower rolling resistance for a smoother ride. Some rules of thumb to consider: rough terrain, short travel distances, infrequent trailer use, and cost consideration, bias may be the right choice. Long travel distances, highway use on paved surfaces, no budget considerations and smooth ride requirements, radial is an ideal choice.
Can I use car tires on a trailer?
No, regular car tires cannot be put in a trailer. This can be dangerous. Tire tread on car tires is different than the tread designed for trailers, which can cause irregular wear on the tire and will blow. Load ratings are also carefully chosen for car or truck tires and completely differ from trailer tires. No, you cannot put car tires on a trailer. Car tires do not usually have the appropriate load rating for towing and could fail due to stress. Trailer tires and passenger car tires also have different treads for different purposes. Car tire treads used on trailers can cause irregular wear and potentially a blow out.