RubberMaster OTR Inner Tubes
Off the Road Inner Tubes for Loaders, Backhoes, Skid Steers

Every tube in our wide selection of OTR tire tubes is designed to carry heavy loads and withstand extreme weight and heat pressures. Our durable off-the-road inner tubes for loaders, backhoes, and skid steers have high load ratings to enhance the tire’s load-bearing capacity, providing better performance supporting heavy equipment, machinery, and payloads. These OTR tire tubes enhance the durability and stability of off-the-road tires used in rugged environments such as construction sites, mining operations, and agricultural fields, where the tires may be exposed to sharp objects, abrasive surfaces, and more.

We are committed to providing fast shipping, guaranteed satisfaction, and top performance on every purchase, courtesy of our Ultimate Advantage Warranty. Our zero risk-return policy makes it easy to return unused products or items that do not fit within 30 days of receipt.


No. To ensure your credit card information stays secure, all payments must be made through Stripe at checkout and can not be taken over the phone.

Unfortunately, we are not able to offer pickup at our facility.

No, not at this time.  We offer either UPS Ground or FedEx Ground service.

Add your desired items to your cart. In the cart or at checkout, you must fill in your address including the city, state and zip code for the freight amount to calculate. Shipping charges are influenced by distance and units ordered.

They are very similar. Ply used to refer to the actual number of plies the tire was built with. Tires today don't need as many plies because of modern material improvements are usually given a Load Range instead, represented by a letter. Each letter is equivalent to 2 plies. See the chart below to help guide you:

Load Range B equivalent to 4 Ply rating

Load Range C equivalent to 6 Ply rating

Load Range D equivalent to 8 Ply rating

Load Range E equivalent to 10 Ply rating

Load Range F equivalent to 12 Ply rating

Load Range G equivalent to 14 Ply rating

ST: Special Trailer 

P: Passenger Vehicles (cars, vans, light-duty trucks, and SUVs)

T: Temporary Spare

C: Commercial (vans or delivery trucks - capable of hauling heavy loads)

LT: Light Truck