BGM Classic tire assembly

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How do I mount the tires on a Vespa / Lambretta?

Using our example bgm Classic tires we show the correct assembly of the tire (split rim).

1. Reduce friction 

The inner tube is subject to flexing when the tire rolls and therefore it makes sense to cause friction inside talc to reduce.
The white powder reduces the friction between the tube and the tire and thus the wear and tear of the tube.

A small amount of talc is distributed inside the tire and the tube is filled with air just enough so that it does not expand and is also dusted with a little talc.

2. Check the direction of travel

Before installing the tube, please first check whether the tire has a direction of rotation specified by the manufacturer.
This notice is with ours bgm Classic tires in the form of an arrow on a tire flank and indicates the direction of rotation of the tire when driving.
The tube is then inserted to match the direction of rotation of the tire, so that the valve, typical for Vespa, points to the left-hand side in the direction of travel.

3. Assembly

To mount the tire on the rim, the so-called Montagepaste a real help. This means that the tire can be pushed very far onto the rim. This makes screwing the two-part rim much easier.

First, the valve is inserted through the wide half of the rim and then pushed into the tire.
The narrow rim half also has an opening through which the valve is accessible. When inserting it into the tire, make sure that the clearance for the valve is congruent with that in the wide half of the rim.

Our bgm Stainless steel rims have replaceable bolts. During assembly, it is important to ensure that the head of the screw is inserted into the square to prevent rotation.

The five nuts of the rim halves will be crosswise with 16 - 18Nm attached. When attaching, make sure that the hose is not trapped between the rim halves.
Then the Inflate tires to 2 bar and check that the tire and valve are correctly seated in the rim.


Tutorial How to assemble the bgm CLASSIC tires for Vespa


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