SET OF 4 CASTLE ROCK ST225/75R15-10PR Trailer Tires and 6 Lugs Silver Wheels 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
Do these come already mounted on the wheel?
Yes. Each bundle is a complete assembly, so the tire comes mounted on the wheel. Before installing, check the inflation pressure against the figure moulded on the sidewall, then bolt the assembly onto your hub and torque the lug nuts to your trailer maker's recommendation.
How do I know this will fit my trailer?
Compare the size moulded on your current tire's sidewall with the size listed in the specifications above, and confirm the wheel's bolt pattern matches your hub. If either one is different, stop and contact us before ordering — we can point you to the listing that matches your trailer.
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.
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.
