RubberMaster Trailer Tires
Trailer Tires for Motorcycle, Ice-Castle, Boat, Cargo, RV and More

When you’re looking for new or spare trailer tires, count on us to provide you with the top-performing, long-lasting trailer tires for motorcycle, ice castle, boat, cargo, RV, heavy loads, fifth wheel camper, gooseneck, car hauler — whatever you need! We’ll help you choose the radial or bias, ST (Special Trailer) or all steel trailer tires that are perfect for the load capacity, towing requirements, and road conditions typically encountered during towing, to keep you smooth-rolling and safe on the road.

We have a zero-risk return policy for unused products. Similarly, we provide a warranty on all products for 1 year and also accept returns for any defective products. All orders are shipped via UPS or FedEx ground service. Fast shipping and guaranteed satisfaction are something we at Treadworld strive to offer our customers.


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