Big O Tires in the Des Moines area just may be the only place around that uses the Haweka adapter with balancing tires. There are two locations in the area, one in Ankeny and one in Altoona. These two shops share the adapter, so its best to call and see which store has it before going in.

I happened to go to the Altoona location and was very impressed. I think it was the cleanest garage and customer area I've even seen in a tire shop like that. People were very friendly and they did an excellent job with balancing.