ASTM Classification F2043
This classification of bicycle wheels was developed by ASTM International (American Society for Testing and Materials), an international standards organization. Wheels classified by ASTM are assigned a number from 1 to 5, which determines the intended use of the wheel. Below you will find an explanation of what each number means.
- Wheels intended for riding on smooth asphalt – for road and time trial bikes.
- Wheels intended for riding on paved and gravel roads – for cyclocross and gravel bikes. In this category, jumps of 15 cm are allowed.
- Wheels intended for riding on light terrain – for cross-country and marathon bikes. In this category, jumps of up to 61 cm are allowed (although there is no guarantee that the wheels will not be damaged as a result of such a jump, everything depends on the rider’s skill).
- Wheels intended for riding on rough terrain – for enduro and trail. The jump height limit is 122 cm, plus the speed limit is 40 km/h.
- Wheels for the most demanding applications – for downhill and freeride. There is no limit to jump height or permissible speed.
For more information, please visit: www.astm.org/Standards/F2043.htm