Vehicle

Tire type

Featured

Brand

Price

Score

Deals

Popular Filters

Sidewall types

Run flat

Studded/Studdable

Three-Peak Mountain Snowflake

More filters

Low to High

High to Low

5.30-12 tires

S378

These tires are intended for trailer axles only, and can withstand long miles of in-line hauling. They're not meant for steering or drive axle applications, and their design offers years of reliable service in trailer applications. Choose from favorites like Gladiator, Carlisle and Goodyear trailer tires.

This product is not covered by a manufacturer’s treadlife warranty.

Mileage Warranty

The maximum load carrying strength at the specified inflation pressure, also known as ply rating.

Load Range

The side of the tire between the tread and rim, with cosmetic branding as well as information about the tire including manufacturer, model, size, etc.

Sidewall

Measured in 32nds of an inch, this metric shows how much tread life is left on a tire, with the tire's traction & stopping capabilities greatly diminished at 4/32nds and less. Tire manufacturers include "tire wear bars" at 2/32nds to indicate when your tire is worn out.

Tread Depth

The highest inflation pressure (measured in pounds of force per square inch, PSI) the tire is designed to contain, and should only be used when called for by the vehicle placard.

Inflation Pressure

An identifier of a particular tire line and size combination assigned by the tire manufacturer.

Part Number

Tread design (or tread pattern) can affect handling, traction & noise for different driving styles & road conditions.

Tread Design

Tire Weight

The measurement of width from a tires inner sidewall to the outer sidewall.

Section Width

The diameter of a tire that is inflated without any load applied.

Overall Diameter

25 tires available in 5.30-12

In Size 5.30-12

**Most drivers choose from our top picks**<br />They include the best matches 
                     of this tire size based on popularity, user ratings, and price.

We'll start with our 5 top picks

Consistently rated as excellent by experts with the highest SimpleScore among the top 5 tires.

Top SimpleScore&trade;:

Chosen by our tire experts.

Sport Trail LH

The maximum carrying capacity for a tire determined by the manufacturer.

Load Index

Maximum speed capability to safely carry a load for an extended period of time.

Max Speed

The range of widths the rim of the vehicle can be for this tire to be safely mounted on.

Rim Range

With similar, but improved specs to the factory tire

Best match:

Best match to original tire

Loadstar K353

Designed for the trailer axle to carry varying loads and withstand strong lateral & braking forces, along with reinforced sidewalls for curbing damage protection.

Filter By

ENDS IN...

5.30/12 rubbermaster Tires

Featured

All

Vehicle

Price Range

RubberMaster S378
5.30-12 C | In stock

Vehicle
Trailer
Mileage Warranty
N/A
Load Range
C (6 Ply)

Sidewall
Tubeless
Tread Depth
9/32nds
Inflation Pressure
80 PSI
Part Number
489172
Tread Design
Symmetrical
Tire Weight
10.5 lbs
Section Width
5.43"
Overall Diameter
21"

Join the SimpleCrew and get exclusive perks.

Did you find what
you were looking for?

Fastest option!

(888) 262 1105

service@simpletire.com

Filter By

ENDS IN...

5.30/12 rubbermaster Tires

RubberMaster S3785.30-12 C | In stock

VehicleTrailerMileage WarrantyN/ALoad RangeC (6 Ply)

SidewallTubelessTread Depth9/32ndsInflation Pressure80 PSIPart Number489172Tread DesignSymmetricalTire Weight10.5 lbsSection Width5.43"Overall Diameter21"

Join the SimpleCrew and get exclusive perks.

Did you find what you were looking for?

RubberMaster S378
5.30-12 C | In stock

Vehicle
Trailer
Mileage Warranty
N/A
Load Range
C (6 Ply)

Sidewall
Tubeless
Tread Depth
9/32nds
Inflation Pressure
80 PSI
Part Number
489172
Tread Design
Symmetrical
Tire Weight
10.5 lbs
Section Width
5.43"
Overall Diameter
21"

Did you find what
you were looking for?