Crazy Ass Gear

When DIY Goes Off The Rails: A Tire Tale

Gus, Crazy Ass Gearby Gus

The full saga: original post

Exploring a ludicrous automotive DIY fail involving spray foam and truck tires.

Aug 10, 2026 2 min read2 picks

Some people just can’t resist a good DIY hack. Unfortunately, not all hacks are created equal. When one guy tried to seal his truck tire with expanding spray foam, it ended predictably—in a flat tire and a heap of online ridicule. The full saga: Reddit r/DiWHY

Ah, DIY—where creativity meets catastrophe. We're all for trying to save a dime, but the OP’s choice to gunk up a tire with spray foam is like using a garden hose to put out a house fire. Rich in ambition, poor in sense.

Tires aren’t just rubber circles; they’re advanced pieces of engineering. The moment you drill into one with misguided ambition, you're inviting disaster. Let’s get real: spray foam isn’t a company-approved way to fix a tire. It crumbles like a bad biscuit under load and can't hold air to save its life.

Lessons learned here? Always vet your hacks. If it sounds ludicrous, it probably is. Instead of turning your weekend into a performance art piece in failure, there are better, proper tools that could save your demands for mobility.

What Would've Prevented This

A run-flat tire insert kit is a game changer when it comes to roadside emergencies. Designed to fill a tire safely, it keeps you moving after a puncture. Plus, it fits through the valve stem—no need for drills that ruin your tires. Pros: Easy to install, keeps you driving, made of strong materials. Cons: Might require pre-purchase if you want to be prepared. Rating: 4.5.

A tire repair plug kit is your compact guardian angel when flat disasters strike. It allows you to fix punctures from the inside of the tire quickly. With included tools that are lightweight and easy to stow, it’s the ideal solution for anyone who drives. Pros: Quick fixes, inexpensive, restores tire function. Cons: Temporary solution, may not work on all types of damage. Rating: 4.5.

The picks

Pick #1
Run‑flat tire insert kit

Run‑flat tire insert kit

4.5/5

What rules

    What sucks

      Check Price on Amazon

      As an Amazon Associate we earn from qualifying purchases.

      Pick #2
      Tire repair plug kit

      Tire repair plug kit

      4.5/5

      What rules

        What sucks

          Check Price on Amazon

          As an Amazon Associate we earn from qualifying purchases.

          The Grease Report

          One email a week. Only gear worth your money.

          Gus, Crazy Ass Gear

          Gus sends the good stuff weekly — gear worth buying, zero fluff.

          More Auto & Truck guides