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Trailer Master ST PRO+ ST205/90R15 F/12PLY

Trailer - Radial
Trailer

Rims Not Included

easy test score

8.1 Excellent

Availability

In Stock

Per Tire:

$77.38

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Total

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Category

Trailer - Radial | Trailer

TMST20

The Trailer Master ST PRO+ ST205/90R15 F/12PLY Tires is a Trailer - Radial tire. Manufacturer part number: TMST20.

The Trailer Master ST PRO+ is a specialty trailer tire designed for strength and long-lasting performance. Its reinforced construction supports heavy loads, while the tread design enhances stability and even wear during highway travel. Heat-resistant compounds help prevent buildup under sustained towing, extending service life. Suitable for utility, cargo, and recreational trailers, the ST PRO+ provides consistent performance and safety on long hauls.

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Specifications

Specs

Value

Description

Load Index

122/117

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

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)

3305

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

7.8

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

5.5

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

Section Width

7.9

The measurement from sidewall to sidewall.

Overall Diameter

29.5

The height of the tire when fully inflated.

Manufacturer Part Number

TMST20

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 #
ST205/75R15	115/110N	-	G/14PLY	27.1	7.9	-	-	5.5	9.3	95	2680	95	2335	TMST25
ST205/90R15	122/117N	-	F/12PLY	29.5	7.9	-	-	5.5	7.8	95	3305	95	2830	TMST20
ST225/75R15	123/119L	-	G/14PLY	28.3	8.7	-	-	6.0	9.9	110	3420	110	3000	TMST13A
ST235/80R16	130/126L	-	H/16PLY	30.7	9.2	-	-	6.5	9.3	115	4190	115	3750	TMST11A
ST235/85R16	132/127M	-	G/14PLY	31.7	9.2	-	-	6.5	11.2	110	4400	110	3860	TMST10
ST235/85R16	133/128L	-	H/16PLY	31.7	9.2	-	-	6.5	11.2	120	4540	120	3970	TMST10A