Please note: This guide does not constitute legal advice. Any information provided here should not be construed as legal advice or legal interpretation. DoneDeal does not accept any liability for any loss caused by reliance on this guide.
🧭 Before You Buy
Buying a used bike is a great way to save money and find a style that suits you — from vintage classics to carbon racers.
Before you commit:
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Know your needs: Commuting, leisure rides, off-road trails, or long tours?
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Set your budget: Factor in potential repairs, accessories, and servicing costs.
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Check the market: Compare prices for similar makes and models.
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Trust your instincts: If the price or story seems too good to be true, walk away.
🔎 Tip: Only buy from sellers you trust. If serial numbers or identifying marks are missing or painted over, it could be stolen — report suspicious ads to Gardaí or DoneDeal Support.
🧰 Basic Safety Checks
Always test the bike before buying.
Brakes:
✅ Pads not worn down or rubbing against the tyre
✅ Cables not frayed or sticking
✅ Wheels spin freely
Gears & Chain:
✅ Gear shifts are smooth
✅ Chain is clean and not rusty
✅ No skipping when pedalling
Frame & Wheels:
✅ No cracks, dents, or rust
✅ Spokes intact and wheels not buckled
Tyres & Saddle:
✅ Tyres aren’t cracked or bald
✅ Saddle is firm and secure
✅ Comfortable fit and adjustable height
⚙️ Size & Fit
A correctly sized bike is safer and more comfortable:
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Stand over the crossbar — there should be 1–2 inches of space.
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Knees should have a slight bend at the bottom of each pedal stroke.
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Handlebars should allow a relaxed bend in your elbows.
If possible, have a bike shop measure your fit before purchase.
🚲 Types of Bikes
Road/Racer: Light, fast, ideal for smooth surfaces.
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Check handlebar comfort and frame weight.
Touring: Built for distance and luggage.
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Look for rack mounts, thicker tyres, and strong brakes.
Mountain: For off-road use.
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Test suspension and frame quality; heavier bikes often mean lower quality.
Hybrid/Commuter: For everyday travel.
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Prioritise mudguards, lights, and pannier compatibility.
Folding: Compact and portable.
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Fold/unfold it yourself to test hinges and locking mechanisms.
Kids: Safety and size are key.
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Child should touch the ground with both feet when seated, and brakes should be easy to reach.
🧢 Gear & Accessories
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Helmet: Must fit snugly and show a CE safety mark. Avoid damaged or cracked helmets.
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Locks: Use a U-lock or D-lock, not a cable lock. Double lock if leaving your bike outside.
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Other: Check panniers, lights, and clothing for wear or damage.
🔐 Register your bike for free at BikeRegister.ie so it can be traced if lost or stolen.
🚗 Transporting Your Bike
If you’re driving to collect or travel with your bike:
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Check rack compatibility with your vehicle before buying.
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Ensure all straps, clips, and mounts are secure.
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For roof racks, watch height restrictions when parking.
✅ Quick Buyer’s Checklist
✅ Test ride the bike
✅ Inspect brakes, gears, and frame
✅ Verify serial number and seller credibility
✅ Ensure correct size and fit
✅ Use strong locks and register your bike
🚴 Happy Cycling!
Follow these simple checks, and you’ll be well on your way to finding — and holding onto — your dream bike.
If you notice anything missing from this guide or want to share your cycling tips, let us know — we’d love to hear from you!
Did we miss anything? Let us know!
Find out more about looking after your bike from the Dublin Cycling Campaign who contributed safety advice to this advice guide.