13x5 RSR Aluminum Trailer Wheel — 5-Lug on 4.5" Bolt Pattern, Black Inlay Machined Spoke Finish | WA326
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Upgrade your trailer with the RSR 13" x 5" aluminum trailer wheel in black inlay — a lightweight, corrosion-resistant wheel with a sleek machined-spoke finish and recessed black pockets. Ideal for boat trailers, utility trailers, enclosed trailers, powersports haulers, snowmobile trailers, and pop-up campers running a 5 on 4-1/2" bolt pattern.
Aluminum trailer wheels shave real weight off your trailer (vs. painted or galvanized steel), resist the pitting and rust that destroy steel wheels near saltwater, and look sharp for years.
⚙️ Why Upgrade to Aluminum
- Lightweight construction — aluminum wheels weigh roughly 30-40% less than comparable steel wheels. Less unsprung weight = easier tow, less strain on bearings, better fuel economy.
- Corrosion resistant — won't rust like painted steel wheels. The gold standard for boat trailers, marina storage, and coastal environments.
- Machined spoke face, black inlay pockets — the RSR design has a bright machined aluminum spoke face with recessed black-painted pockets between the spokes. Upgrades the appearance of any trailer instantly.
- 1,660 lb per wheel capacity — pair of wheels carries 3,320 lb; a set of four carries 6,640 lb. Well-matched to 3,500 lb axles common on single/tandem utility, boat, and small camper trailers.
- Meets DOT / SAE J1204 standards — built to the recognized trailer wheel specification, not a decorative-only wheel.
- Fits standard 13" trailer tires — direct bolt-up replacement for ST175/80R13, ST185/80R13, and similar 13" ST (Special Trailer) tires at Load Range C and D.
📐 Specifications
- Part Number: WA326 (Black Inlay version)
- Wheel Diameter: 13"
- Wheel Width: 5"
- Bolt Pattern: 5 on 4-1/2" (5 × 114.3 mm)
- Pilot / Center Bore: 3.19"
- Lug Size: 1/2"-20 (fits standard trailer lug nuts)
- Load Rating: 1,660 lb per wheel
- Offset: 0 (zero offset — standard trailer application)
- Material: Aluminum (cast + machined)
- Finish: Machined spoke face with black-painted inlay pockets, clear-coated
- Style: RSR (racing-style 5-spoke)
- Compatible Tire Sizes: ST175/80R13, ST185/80R13, ST185/80D13, ST205/60D13, and other 13" × 4.5"–5.5" trailer tire widths
- Compliance: Meets DOT / SAE J1204 trailer wheel specifications
🛠 Confirmed Compatibility
The 5 on 4-1/2" bolt pattern is the most common 5-lug pattern on trailers up to 3,500 lb axles. Your hub is a 5 on 4-1/2" (also written "5×4.5" or "5×114.3") if it matches this wheel. Common trailers using this pattern include:
- Boat trailers — Shoreland'r, Karavan, EZ Loader, McClain, Magic Tilt, Load Rite, Shorelander (with 3,500 lb single axle)
- Utility & cargo trailers — Carry-On, Big Tex 30ET / 35SA, Sure-Trac utility, Hilltopper, PJ U6/U7 utility, AAA Trailer utility line
- Snowmobile / powersports trailers — Triton Elite XT, Karavan, FeatherLite enclosed, R&R Trailers, ALCOM
- Small enclosed cargo trailers — RC / Continental Cargo / Homesteader / Stealth / Cross 4×6, 5×8, 5×10, 6×10 models with 3,500 lb axles
- Motorcycle trailers — Kendon, TrailMaster, Bosski
- Pop-up campers & small travel trailers — older Coleman, Forest River Flagstaff/Rockwood pop-ups, small teardrops
Always verify your existing wheel's bolt pattern before ordering. A 5 on 4-1/2" wheel will NOT fit a 5 on 5" or 5 on 4-3/4" hub — they may look similar but do not interchange.
📏 How to Measure Your Bolt Pattern
For 5-lug wheels: measure from the center of one lug hole, straight across past the wheel center, to the back edge (not center) of the lug hole two positions away. A true 5 on 4-1/2" pattern measures exactly 4.5" by this method. If you measure to the center of the opposite hole instead of the back edge, you'll get about 4.29" — that's the same wheel.
When in doubt, bring your old wheel to our Howell, MI location at 4675 E Grand River Ave — we'll verify the pattern on the spot.
🛥️ Why Aluminum for Boat Trailers?
Steel trailer wheels last 3-5 years around saltwater before the paint chips and rust takes over. Aluminum wheels last the life of the trailer. A set of 4 aluminum wheels on a 3,500-lb boat trailer pays for itself in lower replacement frequency alone. Plus the weight savings (~6-8 lb per wheel) means easier launches and less hub wear.
🔄 Cross-References
This is a 13" × 5", 5 on 4-1/2" RSR-pattern aluminum trailer wheel with 1,660 lb load capacity. Equivalent to or cross-references with:
- HiSpec Series S5 / Series 04 / Series 06 — 13" × 5", 5 on 4-1/2", 1,660 lb aluminum wheels (different spoke patterns, same specs)
- Taskmaster Viking Valhalla / Vor — 13" × 5", 5 on 4-1/2", 1,660 lb aluminum
- eCustomRim Avalanche — 13" × 5", 5 on 4-1/2", ~1,710 lb aluminum
- HWT / Americana Tire & Wheel — 13" × 5", 5 on 4-1/2" aluminum series
If you're replacing one or two wheels and want to match your existing set visually, confirm your current wheel's spoke design before ordering — an exact cosmetic match matters for resale.
🔧 Installation Tips
- Torque lug nuts to 90-120 ft-lb in a star pattern. Aluminum wheels are critical to torque correctly — over-torqued = cracked wheel; under-torqued = loose wheel and stud damage.
- Re-torque after 50 miles on first tow. Aluminum wheels seat over the first heat cycle. This is the #1 reason for wheel-loss incidents on new installs.
- Use proper trailer lug nuts — 1/2"-20 thread. Standard chrome acorn-style nuts fit the RSR seating; no special conical seat adapters needed.
- Grease hub studs lightly before torquing — a dab of anti-seize keeps them from galling and makes future tire changes dramatically easier.
- Inspect for cracks annually, especially after pothole strikes. Aluminum wheels can crack where steel would dent.
💡 Care & Maintenance
- Rinse after saltwater use — the clear coat protects the aluminum, but prolonged salt residue eventually breaks it down. Fresh-water rinse extends wheel life substantially.
- Clean with mild soap + water only. Do NOT use acid wheel cleaners (e.g. Westley's Bleche-Wite) — they etch the clear coat and cause oxidation.
- Wax occasionally — a coat of automotive wax every few months keeps the finish bright and forms a barrier against brake dust and road grime.
- Check tire pressure monthly — underinflated tires put excess stress on the wheel rim and can cause cracks over time.
🛒 Commonly Ordered With
- ST175/80R13 or ST185/80R13 trailer tire (Load Range C or D) — mount-and-balance available in-store
- Matching center cap (sold separately)
- Replacement 1/2"-20 chrome trailer lug nuts
- Trailer hub / bearing kit (if replacing wheels during a full service)
- Spare tire carrier for matching spare
❓ FAQ
Q: Does this come with a tire mounted?
No — WA326 is the wheel only. We can mount and balance a tire of your choice; call 517-225-1991 for tire + mount pricing.
Q: Will this fit my Ford / Chevy / Dodge truck?
No — this is a trailer wheel, designed for trailer hubs and ST (Special Trailer) tires. It's not rated or intended for a passenger vehicle.
Q: Is the center cap included?
No — center caps are sold separately. Call 517-225-1991 for a matching cap or an ABS plastic chrome cap that fits the 3.19" pilot bore.
Q: Can I use this as a spare on my existing trailer with silver wheels?
Yes — the spec (13×5, 5 on 4-1/2", 1,660 lb, 3.19" pilot) is identical to most silver-finish 13" aluminum wheels. Only the cosmetic finish differs. It'll mount and tow perfectly fine as a mismatched spare.
Q: What's the difference between this RSR black inlay and the silver inlay version?
The underlying wheel is identical — same casting, same machined spoke face, same specs. The only difference is whether the recessed pockets between the spokes are painted black (this one) or left machined silver.
Q: Is this DOT approved?
Yes. The RSR aluminum trailer wheel meets DOT / SAE J1204 trailer wheel standards at its rated capacity.
💪 Lightweight aluminum construction. Rust-proof. DOT-compliant. Better looking than steel. A simple upgrade that makes any trailer look — and tow — better.
📞 Call/Text: 517-225-1991 🌐 AAATrailer.com
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- Address: 4675 East Grand River Ave, Howell, MI 48843
- Phone: (517) 225-1991 (Call or text)
- Hours: Monday to Friday: 10:00 AM - 5:30 PM | Saturday: By appointment
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