The one stop trailer shop.

Wheel and trailer parts, family-owned in Tucson since 1965.

Monday to Friday, 8 AM to 4:30 PM

Count the lug nuts on your wheel

What we carry

External parts for trailers and RVs, from axles and wheels to brake lights, jacks, wheel chocks and lug wrenches. If we do not have it on the shelf, we can order it or point you to the right place.

Hubs and axles

Hubs and drums: 2,000 lbs up to 7,000 lbs, with a smaller selection up to 12,000 lbs.

Axles: 2,000 lbs up to 7,000 lbs, in drop and straight types.

Also: idler hubs.

Torsion axles are special order.

Running gear and suspension

Shackle plates
Bolts and nuts
U bolts
Spring plates
Spring perches
Rockers
Equalizers

Tires and wheels

Trailer tires: from 480-8 up to ST235/80R16.

Trailer wheels: 4 lug up to 8 lug.

Also: wheel studs and nuts.

Seals and bearings

Trailer wheel seals
Bearings, import and Timken
Races
Spindle nuts and washers
Grease and oil caps

Brakes

Electric brake assemblies and parts
Hydraulic brake assemblies and parts
Brake backing plates

Lights and electrical

Trailer lights, incandescent and LED
Brake control units
Brake control harness for the tow vehicle

Hitches and towing

Hitches
Ball mounts
Trailer balls
Hitch locks

Tools and supplies

Jacks
Wheel chocks
Lug wrenches
Tire repair supplies
Specialized tools

Fenders and toolboxes

Fenders
Under bed toolboxes
Tongue toolboxes

Not sure which part you need?

Call or email with what you know and we will check the shelves. If you are not sure, bring the old part or a clear photo of it.

Call 520.889.3949 Email us

Helpful to have ready

Tire size. It is printed on the tire sidewall.
Lug count and bolt pattern. See the measuring question below.
Axle capacity. Look for a label on the axle or trailer frame.
Brake type. Electric, hydraulic or none.
The old part or a photo of it.

Started behind a house. Still run by the family.

Storefront sign reading Wheel Equipment, The One Stop Trailer Shop, with trailer hitch, axle and wheel artwork

In 1965, Mike Sr. started Wheel Equipment Inc. out of a small warehouse behind his house. We have moved twice since then to make room for the wide variety of trailer and wheel parts our customers need.

The warehouse got bigger, but we kept the small, local way of doing business. Everyone who walks in is treated like family. Mike Sr.'s sons run the company and his grandson is our General Manager.

Our associates know how to keep trailer running gear in top shape. Parts supply has been uneven across every industry, and we work with our vendors to get items in stock as soon as possible. Whatever the availability, we will keep you informed.

Our Tucson warehouse is 15,000 square feet and stocked with more than 18,000 items for landscape, flatbed, boat, horse and travel trailers.

Trailer parts questions

Quick answers on axles, hubs, brakes and lights. Not sure what fits your trailer? Bring the old part in and we will match it.

Which axle do I need?

It depends on your trailer's weight capacity, how you use it and its frame setup. A straight axle gives more ground clearance and stability. A drop axle lowers the deck for easier loading and unloading.

What is the difference between a drop axle and a straight axle?

On a straight axle the spindles line up with the axle tube. On a drop axle the tube hangs below the spindles, so the trailer deck sits lower.

How do I choose the right axles for my trailer?

Consider trailer weight, load capacity, axle type (straight or drop), axle spacing and fit with your trailer frame.

How do I measure the bolt pattern for my trailer's hubs?

On 4, 6 and 8 lug hubs, measure from the center of one bolt hole to the center of the hole directly across from it. Your bolt pattern is the lug count plus that distance, for example 5 on 4.5 inches. A 5 lug hub has no hole directly across, so bring the hub in and we will measure it.

What are electric brakes and hydraulic brakes for trailers?

Electric brakes use an electrical signal from the tow vehicle to apply the trailer brakes. Hydraulic brakes use pressure from a brake actuator on the trailer.

Can I use trailer lights on a boat trailer?

Yes, but choose lights made for marine use so water exposure does not cause corrosion or damage.

How do I troubleshoot trailer light problems?

The usual causes are burned-out bulbs, wiring problems and faulty connectors. Check each light, inspect the wiring and use a tester to find the fault.

How do I prevent rust and corrosion on running gear?

Clean it regularly, store the trailer properly and apply a rust-resistant coating.

What are the main parts of a trailer's running gear?

Axles, suspension (leaf springs, torsion axles and similar), wheels, tires, hubs, bearings, brakes and related hardware.

How do I read a trailer tire size like ST235/80R16?

ST means special trailer tire. 235 is the width in millimeters, 80 is the sidewall height as a percentage of the width, R means radial and 16 is the wheel diameter in inches.

How do I find my axle's weight rating?

Look for a label on the axle or trailer frame. If it is missing or hard to read, bring the hub or a photo and we can help you identify it.

How often should I repack trailer wheel bearings?

A common guideline is once a year or about every 12,000 miles, but follow your axle maker's instructions. Boat trailers that get dunked often need attention more often.

Do you carry parts for boat, horse and landscape trailers?

Yes. We supply axles, hubs, bearings, brakes, lights, tires and wheels for boat, horse, landscape, flatbed and travel trailers. If we do not carry a part, we can order it or point you to the right place.

What customers say

★★★★★ 4.7 from 234 Google reviews

Read reviews on Google

Racks of steel trailer wheels in many sizes — Google review, 5 stars

Shelves of trailer hubs and brake drums in the warehouse — Zach D., Google review, 5 stars

Showroom wall of trailer hardware, locks, chains and accessories — Bryan R., Google review, 5 stars

Visit our warehouse

Our team will help you find the part you are looking for. Come see our inventory of wheel equipment and trailer supplies.

3250 East President Street
Tucson, AZ 85714

Phone: 520.889.3949
Email: info@tucsonwheel.com
Hours: Monday to Friday, 8 AM to 4:30 PM
Saturday and Sunday, closed

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