23ZERO Dirty Gear Bag for Spare Tires Up to 35 Inches

The 23ZERO Dirty Gear Bag is a spare-tire-mounted utility bag built from 400gsm proofed poly/cotton canvas with a 450gsm PVC internal lining, designed to carry recovery gear, tools, and trail supplies directly on a mounted spare wheel. The adjustable harness system fits tires sized 32, 33, and 35 inches, with a wheel arch clearance of 11.5 inches and capacity for tires up to 12.5 inches wide.

Canvas and Lining Built for Mud, Rain, and Rough Roads

The Dirty Gear Bag's outer shell is 400gsm proofed poly/cotton plain weave canvas with a 1000mm coating, a construction that resists water penetration and abrasion without the stiffness of pure synthetic materials. The 450gsm PVC internal lining adds a second layer of protection, keeping the bag's contents separated from moisture that works its way in during stream crossings or sustained rain. A drain eyelet at the base lets water escape quickly when the bag is removed for cleaning, so grime does not pool and degrade the lining over time.

Stays Put on Rough Terrain

Anti-sag adjustable straps and Velcro webbing take-up loops keep the bag from drooping or shifting when the trail gets rough. The 50mm nylon webbing harness uses 2-inch quick-release SR buckles for fast removal without tools, and stainless steel 5mm diameter D-rings provide secure anchor points that resist corrosion. Reinforced box stitching on major seams distributes load stress across the fabric rather than concentrating it at a single thread line, a detail that matters on extended expeditions where the bag stays mounted for weeks at a time.

Organized Access Without Unpacking Everything

An internal zippered dry pocket keeps clean items (maps, gloves, a first-aid kit) separated from muddy recovery gear in the main compartment. The 14.5-gallon total volume and 5-inch gusset depth give the bag enough capacity to carry meaningful gear without adding bulk that interferes with spare tire access. Because the harness releases quickly, the entire bag comes off in seconds when the spare is needed, and goes back on just as fast.

Features

• Outer shell: 400gsm proofed 1000mm coated poly/cotton plain weave canvas
• Internal lining: 450gsm PVC with large zippered dry pocket
• Hardware: stainless steel 5mm D-rings, 2-inch quick-release SR buckles, 50mm nylon webbing
• Anti-sag system: adjustable straps and Velcro webbing take-up loops
• Seam construction: reinforced box stitching on major seams
• Drain eyelet: base drain for easy cleaning after muddy use

Specifications

Who This Is For and Isn't

The 23ZERO Dirty Gear Bag suits overlanders and off-road campers who carry a mounted spare tire externally (on a rear door, swing-out carrier, or hitch-mount tire carrier) and want usable storage attached to that spare without a permanent modification. It is sized for 32, 33, and 35 inch tires up to 12.5 inches wide.

The Dirty Gear Bag does not fit tires wider than 12.5 inches or tires smaller than 32 inches. It is not designed for internally stowed spares or for use as a standalone ground bag independent of a mounted spare wheel.

Common Questions

Which tire sizes does the Dirty Gear Bag fit?

The 23ZERO Dirty Gear Bag is built to fit 32, 33, and 35 inch tires. The wheel arch opening measures 11.5 inches and accommodates tires up to 12.5 inches wide. Tires outside those dimensions are not a confirmed fit.

Does the bag need to come off to access the spare tire?

The Dirty Gear Bag uses 2-inch quick-release SR buckles on its harness system, so the entire bag detaches without tools. Removal is designed to be fast, giving full access to the spare wheel when needed, and the bag reinstalls the same way.

What is the bag's storage capacity and what fits inside?

The Dirty Gear Bag has a total volume of 14.5 gallons with a 5-inch gusset depth. An internal zippered dry pocket keeps clean items separated from muddy gear in the main compartment. The bag is intended for recovery tools, trail supplies, and similar overland equipment.

How does the bag handle water and mud?

The outer shell is 400gsm proofed poly/cotton canvas with a 1000mm coating, and the interior is lined with 450gsm PVC. A drain eyelet at the base allows water to exit when the bag is removed for cleaning, so moisture does not pool inside the lining after wet-weather use.

Will the bag sag or shift on rough trails?

The Dirty Gear Bag includes anti-sag adjustable straps and Velcro webbing take-up loops specifically to prevent drooping or movement on rough terrain. Stainless steel 5mm D-rings and reinforced box stitching on major seams support the load across the harness system.