"It just needs a battery." "Never dropped, only laid down." "The previous owner was a mechanic." Every used bike ad runs on the same four sentences, and none of them survive twenty minutes in a driveway with someone who knows where to look.

A motorcycle hides less than a car. There's no bodywork covering the frame, no carpet over the floors. Almost everything that matters is visible if you know the order to check it in. Here's that order.

Do the boring part before you leave the house

Get the VIN from the seller. Check it against the title, check the title is in their name, and check for a lien or salvage brand. A bike with a story about a title "in the mail" is a bike you don't buy.

Ask for service records or at least receipts. Ask whether the valve clearance service has been done and at what mileage. Ask them not to warm it up before you arrive. That last one matters more than any other question you'll ask.

It has to be cold when you get there

If the engine is warm when you show up, either come back another day or assume there's a cold-start problem being hidden. A cold start tells you about compression, fueling, oil consumption and battery health in about ninety seconds.

Listen for a top-end rattle that doesn't quiet down as oil pressure builds. Watch the exhaust: blue smoke is oil, black is rich, white that clears in a minute is condensation, white that keeps coming is coolant. Watch the idle for hunting once it's warm.

The chain tells you about the owner

Pull the chain rearward off the back of the rear sprocket at the three o'clock position. If you can lift it far enough to see most of a tooth, it's stretched and the sprockets probably went with it. Look at the sprocket teeth for a hooked, shark-fin profile.

A filthy, dry, rusty chain on an otherwise clean bike is the single most useful signal in this whole process. Someone who won't spend ten minutes a month on the chain didn't change the fork oil either.

Crash evidence hides in about six places

  • Bar ends, lever tips, mirror stems and footpeg feelers — scuffs here in a matching pattern on one side mean it went down.
  • Engine case covers that are newer, cleaner or a slightly different finish than the ones next to them.
  • Fork stanchions: sight down them for pitting, rust or a bend, and check for oil weeping past the seals.
  • Panel gaps and fastener heads on faired bikes. Chewed fairing bolts mean it's been apart.
  • The subframe and the area around the steering head, looking for ripples, fresh paint or weld.
  • Frame sliders that are ground flat on one side, which the seller will describe as "preventative."

Then put it on a stand if you can. Spin both wheels listening for bearing rumble. Push and pull at the forks with the front off the ground to feel for notchy steering head bearings. Grab the rear wheel and twist to check for slop in the cush drive.

Consumables are a negotiation, not a dealbreaker

Tires with date codes over five years old, worn pads, a stretched chain, brown brake fluid and an overdue oil change are all normal on a used bike. As a package they typically add up to several hundred dollars of parts and a weekend, and they're the cleanest lever you have on price.

An overdue valve service is a bigger number, especially on an inline four where the cams come out. If there's no record and the bike is well past the interval, budget for it and say so out loud while you're negotiating.

What it's worth, and when to walk

Prices depend entirely on your local market, season and condition, so use completed listings in your area rather than asking prices. In general, a well-documented bike with 25,000 miles is a better buy than an undocumented one with 8,000, and a common model with a deep parts supply beats a rare one you'll be hunting fasteners for.

Walk away for: no title, mismatched VIN, a seller who won't allow a cold start, undisclosed salvage, or "it just needs the carbs cleaned." That last phrase has ended more projects than rust.

Everything else is math. Bring cash, bring a flashlight, bring a friend who can ride it back, and be willing to leave. There is always another bike, and the one you skip is cheaper than the one you regret.