Hub Length: 75mm (3"); Center Hole Diameter: Approx. 17mm(0.7"); Distance Between Hub Mounting Holes (center to center): Approx. 48mm(1.9"),2 Pcs 11"7.1"-5" Rear Wheels and Tires: LMYYGOO 11"x7.1"-5” rear slick tires and rims are tailored with a hub-rim that fits a bolt pattern of 58 mm/2.28 inches with 3 holes. They are designed for a perfect, secure fit that provides enhanced stability,Slick Tires Non-Threaded Design: These Go Kart wheels and tires are uniquely designed with a non-threaded, tubeless structure. Slick tires are standard go-kart racing tires that are designed with a smooth thread and optimized for maximum grip in dry weather conditions.Slick tires are best used on dry, hard-packed tracks,Medium Tires: Medium compound tires offer a middle point in terms of tire grip, rolling resistance and wear. Hard tires are designed to last longer and also have a lower rolling resistance.Soft tires tend to wear faster and have a higher rolling resistance, but are designed to provide more grip. Medium tires are often regarded as the “safe pick” when it comes to selecting the right tires for a go-kart race,High-Quality Rubber & Aluminum Rims: Made from high-elasticity rubber, these Go Kart wheels and tires deliver excellent traction and stability. They are the perfect replacement for worn-out rubber on your existing Go Kart wheels. The quality material helps in reducing the overall weight of the tire, enhancing your Go Kart's performance