Cyclocross mechanics in Belgium developed this technique decades ago to keep tubulars from rolling off rims during the punishing combination of low pressures, large tire volumes, and aggressive cornering that defines the sport. The Velox Jantex Belgian Tubular Rim Tape adds an intermediate layer between tire and rim that dramatically increases bond strength when used in conjunction with tubular glue. It's not a replacement for cement—it's an insurance policy that gives you confidence when you're leaning hard into off-camber turns.

The tape serves two functions beyond simple adhesion. First, it fills the central channel found on many tubular rims, creating a larger and more stable contact area between the rim bed and tire base tape. That additional surface area means more glue contact and a stronger overall bond. Second, the woven construction of the tape provides mechanical grip that pure adhesive can't match. The fibers interlock with both the glue layers and the cotton base tape of the tubular, resisting the shearing forces that cause tires to roll during hard cornering.

The professional application method builds multiple layers for maximum security. Start with two thin, even coats of tubular glue on the rim, letting each dry to tacky. Apply two coats on the tire's base tape as well. Then lay the Belgian tape onto the rim, smoothing it into the channel. Add a fifth layer of glue on top of the tape before mounting the tire. This five-layer system creates redundant bonding that holds through race conditions where a standard two-layer glue job might fail. One roll provides enough tape for two 700C wheels, so you can outfit a full race wheelset from a single package. The tape works on aluminum tubular rims and leaves minimal residue when it's time to remount.