Solid Tires Electric Bike Tyre Front or Rear Shock Absorber Non-Pneumatic Replacement Tire for 16 Inch Floding Electric Bicycle 16x2.125 Features: No inflation, no inner tube, not afraid of being puncturedEasy and convenient installationTread pattern design: Tread patterns are designed according to different sizes, with strong grip, low rolling resistance and light riding.How to install it?First, soak the solid tire in warm water for 20-30 minutes , it can be easily installed with an iron tire spoon or a flat screwdriver. Recommend a strenuous pre-stretch, zip ties and two METAL tire levers. Specifications: Material: Rubber,Color: Black,Suitable Model: 16x2.125,This 16inch refers to your rim after install the tire outer diameter 16inch. Item Type: Electric Bike Tires. Tire outer diameter: about 365mm/14.37inch,Tire inner diameter:280mm/11inch, Tire groove width: 35mm/1.37inch, Suit for Rim outer diameter:320mm/12.59inch, Suit for rim groove width:30mm/1.18inch.Due to manual measurement, please allow an error of 0-1cm Note: Because the solid tire needs to be clamped on the rim, after receiving the tire, you will find that the solid tire size is smaller than the normal pneumatic tire size.As long as the tire size is the same as the size marked on the old tire size, you can use it. If the size of your original tire is marked as 16x2.125 and rim groove width 30mm, you can place an order according to 16x2.125. This 16inch refers model not size.Need to confirm the size of your E-bike rim slot and rim outer diameter, if the size of the rim slot is too large or too small, it cannot be installed and usedRubber replaces air as a buffering medium, so you will feel harder.Suitable for tire model 16x2.125 inch of 16 inch Electric Bike. Please confirm the size of the Electric Bike tire size before ordering. Package Include: 1 PCS x Solid Tire Only Because the solid tire needs to be clamped on the rim, after receiving the tire, you will find that the solid tire size is smaller than the normal pneumatic tire size. Tire inner diameter:280mm/11inch Suit for Rim outer diameter:320mm/12.59inch Tire outer diameter: about 365mm/14.37inch Tire groove width: 35mm/1.37inch Suit for rim groove width:30mm/1.18inch How to measure your rim groove width and rim outer diameter? It is not an easy task:It requires a bit of strength and a good method to install these solid tires. If you do not have the right technique, or the right tools. We do not suggest you make a purchase.Because the inner wall of solid tire is harder than pneumatic tires, it will be easier to install the solid tire by softening them properly before installation. Note: When you install it, you will find that the inner diameter of the tire is smaller than the outer diameter of the hub.Please don't worry about the size, it's normal.Because The inner diameter of the solid tire is smaller than that of the inner and outer tires of the same size, which can prevent the tire and the wheel from slipping! For 16 Inch Floding Electric Bicycle 16x2.125 Model:16x2.125 This 16inch refers model not size. Non-slip Pattern TIPS:Before install a solid tire,please soak the tire in hot water for 20-60 mins,untill it turns soft. Not An Easy Work:Please do not try to install the tire alone. It is suggested that the installation is done by either more than two people or a professional bicycle repair shop which can ensure the success rate of tire installation. Some tools like screwdrivers, spanner, lever and microwave oven are required. We provide installation instructions as below and video.