SET OF 4 CASTLE ROCK ST225/75R15-10PR Trailer Tire and 6 Lugs Galvanized Wheel Bundle
The Castle Rock ST225 is a trailer item sold here as a set of 4. These are Castle Rock trailer tire and wheel bundles: complete assemblies with the tire already mounted on a silver or galvanized wheel, ready to bolt onto your trailer's hub. They use special-trailer construction with the ply rating shown in each listing's specifications, which puts them in towing duty rather than passenger use. Buy a single to replace one damaged assembly, a pair for a single-axle trailer, or a full set of four for tandem setups. Every bundle ships free from our Orlando warehouse.
Specifications
| Ply Rating | 10-ply |
|---|---|
| Type | Trailer |
| Quantity | Set of 4 |
Key Features
- Complete assembly out of the box — bolt it onto the hub and go.
- Special-trailer construction with the ply rating listed in the specifications above.
- Wheel comes in a silver or galvanized finish to suit your trailer.
- Available as a single, a pair, or a full set of four.
- Built for towing duty behind a vehicle, not for a drive or steer axle.
What's in the Box
- 4 × Castle Rock ST225 items
Typical Use Cases
- Replacing a blown trailer tire before a weekend boat haul.
- Outfitting a tandem-axle utility or cargo trailer with a matched set.
- Carrying a ready-to-bolt-on spare assembly for long interstate tows.
FAQ
What is the difference between the silver and galvanized wheels?
The tire is the same either way; only the wheel finish differs. Galvanized wheels wear a zinc coating that holds up better around water and road salt, which makes them the usual pick for boat trailers. The silver finish is the common choice for utility and cargo trailers.
Can I run these on my truck or car?
No. These are special-trailer tires, built to be towed rather than to steer or drive a vehicle. Their construction differs from passenger and light-truck tires, so keep them on the trailer and put automotive tires on the tow vehicle.
How many should I order?
A single bundle replaces one damaged assembly, a pair covers one axle, and a full set of four handles a tandem-axle trailer. Tires sharing an axle should match in size and wear, so when both sides are aging, replacing them together is the safer call.
Assemblies arrive mounted and ready to bolt on. See assembly vs separate for how they compare. Ships free from our Orlando, FL warehouse. Questions? Call (407) 821-7008.
