Recycled Bike Tire As Fender




Prevent dirt form getting on you and the chain with the help of a fenders made from an worn out or damaged tire. This project used a damaged road bike clincher racing tire as a road bike rear wheel fender. Used, road side recycled, wire to attach the fender to the bike frame. Tire fenders are somewhat camouflaged, as it is tire looking, at first glance.

Using a tire from the same bike type is a good start as the fit is closest. The radius of the old tire needs to be larger when used as a fender so to fit over the present tire. The bead of the old tire bends to a larger fender radius only if the recycled tire rubber part is shortened by dimpling, by a wire spreader. The spreader holds the tire fender wider and dimples in the rubber making the old tire wider and a larger radius of curvature. Customize as needed.

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Step 1: Cut an Old Tire for Use As Fender

Decide on how much of the tire is used for the fender and cut it using Tin Snips or any other scissors that can cut the tough steel inside the tire bead.

Step 2: Make Wire Tire Fender Spreaders

Use steel wire (I found mine on the roadside) into the shape shown. It hockes the tire bead wider and dimples the tire rubber.

Step 3: Apply Your Wire Spreader

Put the wire spreader over the tire, don't crimp it at the bead yet as you might want to adjust the fit. In this case you also see the tire damage that inspired recycling this tire into a fender.

Step 4: Put the Fender Over the Bike Wheel

In my road bike case the tire fender fits under the brake levers as shown. Use wire, bent to hook over the bike frame. I put the wire hook part on the bike frame piece holding the brake. In my case  the hook is over the horizontal bar. It pulls up by hooking the tire bead. The tension adjusted to hold the tire fender up against the inside of the brake levers. I found the tire fender did not interfere with my brake, you should check this to be sure. Adjust tire fender spreaders as needed.

Step 5: Secure the Fender at Ends

Here the fender is attached to the frame. I bent the wire of the tire bead into a hook. I held this hook to the bike frame using a wire tie from a loaf of bread.

Step 6: Wire Tie the Tire Fender End

The other end of the tire fender was wire tied using "road side" wire.

I will be testing to see what issues come up in this concept. If you do similarly feel free to post your experience as we improve on recycled tire fenders. It would be interesting to know the origin of dirt that gets on the bike chain. I am motivated to protect the chain from dirt via duct tape and cardboard. This material allows easy prototyping, the difficult to design, construction. My overall investigation is a longer term guarding method to prevent dirt from ever getting onto the chain and gears.

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    5 Discussions

    m a r i a n o

    6 years ago on Step 6

    Very good work.

    The chain cover arrangement shown in the photos should help you to keep dust away.

    Just for those that may not know it: the most important thing for keeping dirt away from the chain is to dry it after lubrication. Oil on the surface of the chain captures immediately dust, building this black mud that you see in the chain and gears of many bicycles. Lubricating a dirty chain makes the problem worst.


    9 years ago on Introduction

    Try..recycling used stainless steel spokes for the  spreaders to avoid crappy looking rust stains.  Also, FYI, anytime a utility pole is downed or work is done on adding cables a stainless binding wire is often used and scraps are left laying around.  I have found "scraps "   several tens of yards long.   Scrapyards may have rolls of damaged stainless welding wire, if the rolls is bashed out of round, crimped or dented it will not feed in a welder and the yards will sell it for about a USD to 1.5 USD a pound.  Good for maille too.


    9 years ago on Introduction

    The last time I saw something like this it was a car-tyre on a motorbike. The piston-shattered so that bike never really worked...


    2 replies

    Reply 9 years ago on Introduction

    I did not expect a reply so fast, how do you get notified so quickly that this new doc was posted? Did you make that car-tyre motor bike device?


    Reply 9 years ago on Introduction

    I just happened to be looking at "recent".
    My friend built a bike from an old MZ frame, Honda front I think, Yamaha engine he got from something abandoned by a canal, Honda-tank etc.. It was a horrible mess and it broke. But I like functional jobs like this - they work and that's the main thing.

    The panniers look good too.