Classic style in a classic size, our 3.50-10 (100/90-10) tubeless pneumatic scooter tire with K324 Tread proves you can indeed have it all without breaking the bank Also known as the 100/90-10, this size has been a perennial favorite since the Golden Age of Scooterdom Description Classic style in a classic size, our 3.50-10 (100/90-10) tubeless pneumatic scooter tire with K324 Tread proves you can indeed have it all without breaking the bank. Also known as the 100/90-10, this size has been a perennial favorite since the Golden Age of Scooterdom. The long-lasting popularity of 3.50×10 rubber makes it a perfect fit on innumerable models of both vintage and modern motor scooters. WARNING California Residents : Proposition 65 Warning Specifications Size: 3.50-10 (100/90-10) Type: Tubeless pneumatic Tread code: K324 Rating: 4PR TL Load: 430 lbs @ 36 PSI cold