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Trailer King RSTII ST185/80R13 D/8PLY

Trailer - Radial
Radial

Rims Not Included

easy test score

7.8 Great

Availability

In Stock

Per Tire:

$49.92

Estimated Delivery

Shipping

Total

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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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Name

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Size

Price

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Specifications

Specs

Value

Description

Load Index

99/95

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

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

D/8PLY

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)

1710

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)

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

5.0

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

Section Width

7.2

The measurement from sidewall to sidewall.

Overall Diameter

24.6

The height of the tire when fully inflated.

Manufacturer Part Number

RST16T

Manufacturer part number (sku)

Size Details

Size	Load Index/ Speed index	UTQG	Load Range/Ply Rating	Overall Diameter	Section Width	Rim Width Min	Rim Width Max	Rim Width Meas	Tread Depth (in)	Max Single Air Pressure (PSI)	Max Single Load (lbs)	Max Dual Air Pressure (PSI)	Max Dual Load (lbs)	MFG #
ST175/80R13	97/93M	-	D/8PLY	24.0	7.0	-	-	5.0	8.0	65	1610	-	-	RST14T
ST175/80R13	91/87M	-	C/6PLY	24.0	7.0	-	-	5.0	8.0	50	1360	-	-	RST13T
ST185/80R13	94/89M	-	C/6PLY	24.6	7.2	-	-	5.0	8.0	50	1480	-	-	RST15T
ST185/80R13	99/95M	-	D/8PLY	24.6	7.2	-	-	5.0	8.0	65	1710	-	-	RST16T
ST205/75R14	100/96M	-	C/6PLY	26.1	8.0	-	-	5.5	8.0	50	1760	-	-	RST36T
ST205/75R14	105/101M	-	D/8PLY	26.1	8.0	-	-	5.5	8.0	65	2040	-	-	RST37T
ST205/75R15	101/97M	-	C/6PLY	27.1	8.0	-	-	5.5	8.0	50	1820	-	-	RST48T
ST205/75R15	107/102M	-	D/8PLY	27.1	8.0	-	-	5.5	8.0	65	2150	-	-	RST49T
ST215/75R14	102/98M	-	C/6PLY	26.7	8.5	-	-	6.0	8.0	50	1870	-	-	RST38T
ST215/75R14	108/103M	-	D/8PLY	26.7	8.5	-	-	6.0	8.0	65	2200	-	-	RST39T
ST225/75R15	113/108M	-	D/8PLY	28.3	8.8	-	-	6.0	8.0	65	2540	-	-	RST51T
ST225/75R15	117/112M	-	E/10PLY	28.3	8.8	-	-	6.0	8.0	80	2860	-	-	RST53T
ST235/80R16	124/120M	-	E/10PLY	30.8	9.3	-	-	6.5	8.0	80	3520	-	-	RST24T
ST235/85R16	125/121M	-	E/10PLY	31.7	9.3	-	-	6.5	8.0	80	3640	-	-	RST17T
ST235/85R16	128/124M	-	F/12PLY	31.7	9.3	-	-	6.5	8.0	95	3960	-	-	RST18T

Reviews

Jul 15, 2021 by Jimmy J.

Don’t look anywhere else!

"Best price, as advertised, fast shipping and completely satisfied! Highly recommend!!"

Jun 13, 2021 by Bill K.

Fantastic tires!

"I changed from bias ply tires to these radials on my enclosed trailer. I can't believe what a difference it made! The ride is so smooth and the gas mileage improved so much I forgot the trailer was even there!"

Jun 16, 2021 by Joseph S.

These tires are best for the trailer I have

"The are a good quality tier for the price"

May 20, 2022 by Mar

Blow Outs!

"This company is great, but the tires have some issues... Either poor workmanship or Materials. All tires were replaced with manufacture & local tire store advice we went with Trailer King. one month after being on the road traveling first tire goes, in seven months we changed 7 tires in 10, 237 miles. Wish I could share pictures for you to see! We are home now, and plan to research & get all new tires. NOT TRAILER KING!"

Jul 3, 2022 by Randy L.

Great price on a great product !!!!!

"The tires are performing just as they should. Another super deal from Giga tires"