Tubeless Conversion Guide

Tires · Beginner · ~10 min read · 9 steps

Tires

Converting to tubeless eliminates pinch flats, lets you run lower pressure for better grip, and gives you automatic puncture protection through sealant. It's straightforward once you confirm compatibility and have the right supplies.

Check Compatibility First

You need a tubeless-ready rim (look for "TLR," "UST," or "Tubeless Ready" in specs) and a tubeless-compatible tire (marked "TLR," "TR," "TCS"). Standard clincher tires have too-loose bead tolerances and won't hold pressure reliably without a tube.

Hookless carbon rims have strict approved tire lists. Always verify compatibility on the rim manufacturer's website before mounting — an incompatible tire can blow off a hookless rim at pressure.

What You Need

Tubeless rim tape

Tubeless valve stems (×2)

Tubeless sealant

Syringe or injector

Valve core remover

Floor pump or compressor

Isopropyl alcohol

Choose rim tape 2–4mm wider than your rim's inner width. Stan's, Gorilla Tape, and OEM rim-specific tapes are all reliable. Avoid electrical tape — it fails at high temperature and pressure.

Taping the Rim

Clean the rim bed

Wipe the entire rim channel with isopropyl alcohol and let it dry. Any residue prevents adhesion. Remove all old tape completely.

Apply the tape

Start at the valve hole, stretch slightly as you apply, and complete two full laps overlapping your start by 5cm. Press firmly with your thumb into the rim channel. No bubbles over spoke holes — these are the most common leak points.

Use a plastic tire lever handle to burnish the tape edges firmly into the rim channel after application. Adhesion at the channel walls is critical at high pressure.

Install the Valve

Pierce and install

Use a sharp awl to punch through the tape at the valve hole. Insert the tubeless valve from inside the rim, seat the rubber base flat against the tape, and snug the lockring from outside. Don't overtighten — the rubber base can deform and leak.

Mount the Tire

Mount dry first — no sealant yet

Push both beads over the rim using only your thumbs, keeping the last section near the valve where there's the most slack. Tire levers can nick the tubeless bead and cause leaks. If you genuinely can't mount it by hand, warm the tire indoors first.

Seat and Add Sealant

Remove the valve core and inflate

Use a valve core tool to remove the core — this lets air rush in far faster. Pump quickly and listen for two pops as each bead seats. If a floor pump won't do it, use a compressor or booster tank. See the companion guide for detailed seating tips.

Inject sealant

Slightly deflate the tire. Inject sealant through the open valve using a syringe (see the Sealant Calculator for brand-specific amounts). Reinstall the valve core and inflate to a few PSI above your normal riding pressure.

Distribute and cure

Spin and rotate the wheel in all directions for 2–3 minutes to coat the inner surface. Leave it flat for 10 minutes per side. Check for leaks with soapy water. The wheel should hold pressure overnight — if it loses more than 5 PSI, check the valve and bead area.

Ongoing Maintenance

Check sealant every 2–3 months. Remove the valve core and dip a thin wire in — if it comes out dry, top up. You can inject fresh sealant through the valve without breaking the bead. After a self-sealed puncture, the dried plug can stay in place permanently.

Keep a plug kit (Dynaplug or similar) in your saddle bag for holes larger than ~4mm that sealant can't seal on its own.