[First Look] TyreInvader by Effetto Mariposa

LUGANO, SWITZERLAND – Tyre inserts (a.k.a. anti-pinch-flat inserts, tyre noodles etc.) are popular in some markets, but they also are a very polarizing topic, a matter of love and hate. With Tyreinvader, Effetto Mariposa sets out to create one that stands out from the rest.

WHY TYRE INSERTS WERE CREATED IN FIRST PLACE

Tubeless tyres (with sealant) are surely helping to keep punctures to a minimum, but they don’t totally eliminate them. With the right force, especially on rocky terrain, it’s possible to pinch-flat a tubeless tyre, cutting the tyre by pushing it very hard against the rim. Also rims can be damaged in those circumstances.

To avoid that, some brands started offering tyre inserts, some flat, some round (like donuts, that’s where “tyre noodle” comes from) some with other shapes.

These products have become popular among racers, especially for gravity disciplines (Enduro, DH), with some adopters even in cross country: they virtually eliminate pinch flats and – in some cases -also allow the rider to continue riding after a puncture.

COMMON PROBLEMS OF TYRE INSERTS

We list here below the main limitations of current tyre inserts, explaning how Tyreinvader is designed to overcome or mitigate them.

Weight

Typical insert weight starts at 100 g and goes up to over 250 g per wheel. While that can be ok for Gravity purposes (or e-bikes), it becomes problematic for a bicycle that has to be pedaled uphill. Heavy wheels always slow down the handling, no matter the practice.

Tyreinvader starts at 50 g (Tyreinvader 40) and reaches 90 g for the widest, Plus-ready Tyreinvader 60. The weights* for the different Tyreinvaders refer to the product uncut (for 29” wheels), so it’s even lower when adapted to 27.5” or 26” wheels:

• Tyreinvader 40 = 53 g
• Tyreinvader 50 = 68 g
• Tyreinvader 55 = 80 g
• Tyreinvader 60 = 92 g
  * Tolerance on nominal weight is + / – 5%

Some brands encourage riders to switch to lighter tyres to partially compensate with the weight increase. We don’t agree with that, as light sidewalls offer limited protection against sharp rocks and abrasion, something inserts can’t do much about.

Radical change of tyre feel

Most inserts take up much space inside the tyre inner cavity, reducing the air volume and the influence on the tyre feel of the inflating pressure (as the insert is often compressed during normal riding, not just on heavier hits). Some other inserts take the concept to the extreme, completely filling the tyre.

We don’t discuss the validity of this approach, we just chose with Tyreinvader to allow riders to use pressure as the main parameter to tune their tyre behavior. You might still feel Tyreinvader inside your wheels, so a test ride is recommended before you race with it.

Special tubeless valves

Because of their round shape, some inserts sit on the base of the tubeless valve once mounted, and will prevent normal inflation unless using special tubeless valves (often provided by the insert maker, but normally quite heavy).

Tyreinvader won’t interfere with inflation, with any tubeless valve.

Durability

We’ve seen inserts destroyed after a descent in tough conditions, as some foams are not made to resist repeated impacts, just to cushion them and break in the process. We use EVA, a closed cell polymer commonly used for sport shoe soles, with very high shock absorption and great mechanical properties. There are other premium inserts with a good durability, but they normally weigh/cost much more than Tyreinvader.

Run flat mode

Rolling with no pressure in the tyres should only happen in emergency situations. In that event, inserts that fit loosely inside the tyre (often to make mounting them easier) are only pushing the tyre against the rim passively, because of rider weight.

Tyreinvader is tight on the rim by design, to help keeping the tyre on the wheel in case of emergency.

What about the little aliens and the arcade font?

Who doesn’t remember SpaceInvaders? Even those too young to do it can learn about this piece of videogame history thanks to retrogaming. Besides, our product is actually invading the tyre, thus “Tyreinvader”.

The alien-shaped cut-outs serve several purposes: to save weight, to allow easy sealant flow and, why not, to give Tyreinvader a unique look.

Versions

• Tyreinvader 40
• Tyreinvader 50
• Tyreinvader 55
• Tyreinvader 60See chart for recommended rim/tyre widths. 

  Price

  Tyreinvader starts at 39.99€ (including VAT, for Tyreinvader 40, 2 pcs. Price in other currencies TBD).

  Tyreinvader is Made in Italy Availability

  Starting January 2019