Extreme Max Spare Tyre Carrier for Angle Iron Trailer Frames — Fits 12–15" Wheels, Low-Profile

The Extreme Max 3005.3868 Angle Iron Spare Tire Carrier secures a 12"–15" wheel to angle iron trailer frames (1.5"–2" wide, 11–1/4 gauge) with a compact, heavy-duty bracket.

When you need a low-profile, dependable spare tire mounting solution for trailers built with angle iron rails, this carrier is designed to attach directly to the frame and hold common wheel sizes and bolt patterns. The bracket’s small footprint preserves under-trailer clearance while offering a range of bolt pattern compatibility so you can mount popular passenger- and light-truck-style wheels. Before installing, confirm your trailer frame’s load capacity to make sure it can support the combined weight of the carrier and spare tire.

Which trailer frames and wheel sizes does this carrier fit?

This carrier is made for angle iron frames that are between 1.5 inches and 2 inches wide and from 11-gauge (about 1/8") up to 1/4" thick. It accepts wheels sized 12 inches through 15 inches in diameter and up to 8 inches wide, covering the most common trailer and utility tire setups.

• Frame compatibility: 1.5"–2" width, 11-gauge to 1/4" thickness
• Wheel diameter: 12"–15"
• Wheel width: up to 8"

What bolt patterns are supported by the bracket?

The design accommodates a variety of industry-standard bolt patterns so you can mount wheels with different lug arrangements without adapters. That flexibility helps when replacing or relocating spares between trailers or when using wheels from common passenger or light-truck hubs.

• 4 on 4" and 5 on 4-1/2" patterns
• 5 on 5" and 6 on 5-1/2" patterns
• 8 on 6-1/2" pattern included for larger-lug wheels

How big is the carrier and how does it affect under-trailer clearance?

The bracket has a compact profile—about 8-1/8 inches wide by 3 inches tall—so it minimizes intrusion beneath the trailer. Its small dimensions make it suitable for tight clearances while still providing a secure mounting point for the spare tire.

• Overall bracket footprint: 8-1/8" wide x 3" tall
• Low-profile mounting reduces snag and ground-clearance impact
• Designed for direct attachment to angle iron without large overhangs

Are there installation or safety considerations I should be aware of?

Installation requires that the angle iron frame be structurally able to bear the spare’s weight and road forces. If you are unsure about frame strength, check your trailer’s specifications or contact the manufacturer. Use proper fasteners and torque values for secure attachment and periodically inspect the mounting for looseness or corrosion.

• Confirm frame load rating before mounting the spare
• Use compatible fasteners and follow correct torque procedures
• Inspect mount and hardware regularly for wear or corrosion

Who is this for: The Extreme Max 3005.3868 carrier suits trailer owners, fleet managers, and DIY mechanics who need a compact, adaptable spare tire mount for trailers with angle iron rails. It’s ideal for utility trailers, small utility haulers, and owners who prefer to keep a spare accessible without sacrificing ground clearance or adding bulky hardware. If you run uncommon wheel sizes or have a thin-frame trailer, verify compatibility before purchase.