The balancing was successful, and I don't believe the wheels are brand new. 25 * 20 * 15 * 10 grams each wheel. I got pr-in. Philippines 20 years. Some pros: The handling is excellent, the noise level is acceptable, and it responds predictably when driven in the rain. The hinges open and close easily. Maintains a record A few drawbacks: I couldn't find it! In the event where the tread is merely impeded by the pebbles,