michelin bopper

I have been researching tire weights over at dennis kirk's website and noticed Michelin Front or Rear Bopper 120/70L-12 Blackwall Tire - 69058 6lbs Michelin Front or Rear Bopper 130/70L-12 Blackwall Tire - 82733 7lbs For comparison Michelin Front Power Pure SC 120/70P-12 Blackwall...