Recommended height
The recommended height is the optimal rider height for which the scooter is designed. The more closely the rider's actual height matches the recommended height, the more convenient and safer it will be to use the scooter. Usually, the recommended height is indicated by a certain range of values. It is perfectly acceptable to order a scooter for height, but the difference between the actual and recommended height should be minimal. When choosing a scooter, you should be guided by other parameters, such as age group, rider weight and other characteristics.
Front wheel size
The diameter of the front wheel(s) of the scooter.
This parameter is selected by the manufacturer depending on the type, age category and general purpose of the scooter. If we compare similar models with different wheel diameters, then it is worth considering that the larger the wheels, the better they work on the bumps in the road, and the higher the cross-country ability. And small wheels, in turn, are great for smooth asphalt and dynamic driving, they easily accelerate and allow you to make sharp turns.
Rear wheel(s) size
The diameter of the rear wheel(s) of the scooter. See "Front wheel diameter" for details on the value of this parameter.
Wheels
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Polyurethane. Wheels with solid polyurethane tyres. This material provides good cushioning, high-quality grip and, at the same time, good rolling; it is resistant to temperature extremes and damage, durable, while it is inexpensive. Due to this, polyurethane wheels are the most popular nowadays, they can be installed even in fairly advanced models of scooters — in particular, sports ones.
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Rubber. In this case, we mean wheels with a solid rubber tyre (inflatable wheels are moved to a separate category). According to the main characteristics, rubber is similar to the polyurethane described above, and in some moments even surpasses it. So, such tyres do not make noise, smooth out the roughness of the asphalt well, have excellent grip and provide high braking efficiency. On the other hand, this material is less durable and does not tolerate temperature extremes, and therefore is used much less frequently.
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Silicone. Wheels with a solid tyre made of silicone. These tyres are quite soft; this, on the one hand, worsens the rolling compared to the same polyurethane, on the other hand, it provides excellent cushioning. At the same time, silicone is short-lived and wears out quickly, especially under high loads; therefore, wheels made of this material are quite rare and are considered suitable mainly for children's scooters.
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Plastic. Plastic has a low cost, besides, it can be given almost any colour. On the other hand, hard plastic wheels do not provide cushioning, are very noisy and generally not suitable for fast driving. Therefore, this material is found exclusively in models for kids; while the overall quality and reliability of plastic is highly dependent on the price category.
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Inflatable. The most advanced type of wheels are found in modern scooters. Wheels of this type have an inflatable tyre (as in bicycles), which provides excellent shock absorption and good grip. The disadvantages of inflatable tyres, in addition to the price, include sensitivity to punctures and increased maintenance complexity: you need to monitor the pressure and, if necessary, inflate the tyre.
Max. height
The maximum height to which the height-adjustable handlebar can be set (or just the height of the handlebar in the working position, if height adjustment is not provided).
The height of the handlebars should be such that the rider can stand on the deck straight, without bending his back, and hold on to the handles with slightly bent arms. At the same time, there is no unambiguous relationship between this parameter and the height of the rider. So the perfect option to determine the optimal height is to try it yourself, and then choose a scooter based on the result.
Deck size
Scooter deck size. This item can indicate both the length and width or only one size — most often this is the length.
In general, this parameter is secondary: manufacturers choose the size of the deck depending on the type, age category, general specialization and other features of the scooter. Legroom, usually, is guaranteed to be enough on the deck. We only note that shorter decks are more agile, and longer ones are stable on the course.
Footspace
This term refers to the useful area of the deck on which you can put your foot. It is size without taking into account the folding mechanism, wheel fastening and other elements that are not intended for the leg.