90/90-21 Street Motorcycle Tires
You generally have two options when buying 90/90-21 street tires online. Those options are bias-ply or radial tires. Bias-ply is the older style and refers to the tire construction. With bias-ply tires, the material runs laterally from one bead to the other. A second layer runs the opposite direction, which is where the “bias-ply” term arises. More modern tires use material that radiates out from each bead on either side of the tire. This gives it more strength, better handling of heat, and a bigger contact patch. That adds up to a tire that lasts longer, handles higher speeds, and gives you better traction. Therefore, radial tires are the current standard in motorcycle tire technology.
Street Tires 90w Handle Great at Low Speeds
When you see a 90 aspect ratio and 21 rim size, that tells you a lot about the tire. It means the tire has a sidewall that's 90% as tall as the tire is wide. So, the 90/90-21 street tires online are 90-millimeters wide and 81-millimeters tall at the sidewall. That is an ideal size for lighter motorcycles, such as dirt bikes, dual-sports, and smaller road bikes. The 21-inch rims give the wheel a better ability to get over ground hazards. The lighter weight also makes it easier for you to maneuver the wheels at slower speeds. It helps maintain stability while at higher speeds as well.
Find Street 90/90-21 Tires on Sale
All the best brands offer many types of 90/90-21 tires on sale online. You can search by tire size, by manufacturer, or by the motorcycle make and model. That will help ensure you get a full listing of the best brands that are offering good deals on 90/90-21 street tires online. You can find radials or bias-ply tires to suit your travel needs. If you have a road bike and do not ride fast, bias-ply tires likely will work fine. Radial tires are preferred when you travel more often at highway speeds and above.