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Trailer King RST ST235/80R16 F/12PLY Tire

Trailer - Radial

Rims Not Included

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8.1 Excellent

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In Stock

Per Tire:

$77.94

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Was $97.43

$13.60

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Selling fast: at the current sales pace, this size is expected to sell out in 3 days this size is expected to sell out in 3 days expected to sell out in 3 days

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TOW WITH CONFIDENCE. BUILT FOR THE LOAD

The Trailer King RST delivers stable towing and reliable load support. Built for highway durability and heavy-duty performance.

Continuous Solid Center Rib: Improves straight-line tracking and reduces trailer sway.
Optimized Tread Depth Geometry: Reduces heat buildup during highway towing.
Full Nylon Overlay Structure: Reinforces the casing for heavy loads.
Enhanced Shoulder Block Design: Promotes even treadwear during trailer turns.
Weather-Resistant Rubber Compound: Resists UV damage, cracking, and dry rot.

SEE THE TIRE IN ACTION

Category

Trailer - Radial

MFG

RST25T

This listing is for new Trailer King RST ST235/80R16 F/12PLY Tires. Manufacturer part number: RST25T.

The Trailer King RST is a radial ST (Special Trailer) tire for the trailer, not the vehicle pulling it. It suits utility, boat, camper and equipment trailers that need a radial casing built to carry weight at highway speed without building excess heat.

The steel-belted radial casing adds a nylon overlay on most sizes. That cap holds the belts in shape under load and speed, where trailer tires build heat. The shallow, ribbed tread runs cooler than a deep one, tracks straight and resists the side scrub tandem axles take in tight turns. It carries an M speed rating (81 mph) on most sizes and N (87 mph) on some, above the 65 mph default for an ST tire with no speed symbol.

A long, trouble-free life on any trailer tire comes mostly from setup: correct inflation, the right load range and attention to age. The RST comes in light load ranges for small utility trailer sizes and goes up to load range F (12-ply rating) on heavy 16-inch sizes. Pick the load range by the trailer's loaded weight, not its empty weight, and leave margin. It is built for free-rolling trailer axles only.

Best-suited for: utility trailers, boat trailers, travel trailers, car haulers, landscape trailers and equipment trailers.

Tire Best Features:

Steel-belted radial ST construction, built for the sustained heat of highway towing.
A nylon overlay on most sizes holds the belt package in shape under load and speed.
Shallow, ribbed tread runs cooler, tracks straight and resists tandem-axle scrub.
Load ranges from light duty up to F (12-ply rating) match the tire to the loaded weight.
An M speed rating on most sizes, above the 65 mph default for unmarked ST tires.

For nearly 10 years, Giga Tires has served the online tire community. With over 1 million tires sold, 24K+ 5-star reviews, and thousands of tires at your fingertips at unbeatable prices, see for yourself why customers choose Giga as their online tire shop.

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About the Manufacturer:

Trailer King is a specialized trailer tire brand developed by TBC Corporation, a prominent North American tire supplier established in 1956. Designed specifically for towable applications, Trailer King manufactures ST (Specialty Trailer) radial tires engineered to manage heavy load distribution, lateral sway, and high center-of-gravity demands. TBC Corporation maintains rigorous quality assurance across its global manufacturing network, ensuring every tire meets stringent U.S. Department of Transportation (DOT) and highway safety standards. Trusted by major trailer OEMs, Trailer King delivers certified reliability across utility, cargo, RV, and marine transport sectors.

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Size

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Specifications

Specs

Value

Description

Load Index

127/122

The load index (LI) is a 2- or 3-digit number that correlates to the maximum amount of weight the tire can carry. For example, a tire with a load index of 87 indicates that the tire can carry a maximum load of 1,201 lbs. In this particularly example, 4 tires (each with a load index of 87) can carry a maximum of 4,804 lbs. Refer to your vehicle owner's manual for the recommended minimum load index.

Speed Rating
Tires speed rating

Speed rating (SR) indicates the maximum speed the tire can achieve. Higher speed ratings are typically associated with better handling capabilities. Refer to your vehicle owner's manual for the recommended minimum speed rating.

Load Range/Ply Rating

F/12PLY

Ply rating, more commonly referred to as load range, represents the strength and durability of the tire. Higher ratings may indicate your tires can handle heavier loads.

Max Single Load(lbs)

3860

The maximum load this tire will support. Remember to multiply this number by the number of tires installed on your vehicle to get the maximum carrying capacity. This number is directly related to the Load Index.

Max Single Air Pressure(PSI)

100

The maximum air pressure this tire will support. This does not represent the amount of air pressure your tires should have at all times. Consult with your owner's manual to determine the best air pressure you should use for your vehicle.

Tread Depth

8.0

The amount of tread on the tire. Once the tire is worn to 2/32nds, it is considered fully used and should be replaced at that time. Most tires will have tire indicators in the grooves of the tire to help you determine when the tires are worn down to 2/32nds.

Tread Design

Nondirectional

The pattern of the grooves, lugs, voids, and sipes on a tire's surface. This design affects the tire's traction, handling, and noise characteristics. Common types include symmetrical (uniform pattern across the tire), asymmetrical (different patterns on the inside and outside for varied road conditions), and directional (designed to rotate in one direction for improved wet traction and hydroplaning resistance).

Measured Rim Width

6.5

The recommended wheel width as recommended by the tire manufacturer to get the best wear us performance for this tire.

Section Width

9.3

The measurement from sidewall to sidewall.

Overall Diameter

30.8

The height of the tire when fully inflated.

Manufacturer Part Number

RST25T

Manufacturer part number (sku)

Financing

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Select 3, 6 or 12 monthly payments, with rates from 10% - 36% APR. 18 months financing available for orders over $1000.00

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To learn more visit Buy With Affirm or read their convenient Affirm FAQ's. All credit decisions are made by Affirm.

To contact Affirm regarding your account, please call 1-855-423-3729.

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