It does navigate O27 curves

600-horsepower RS3 in 1950 (although a few late RS2s were rated at 1

free-rolling trucks with RP-25 metal wheels and Proto MAX(TM) knuckle couplers

Model Number: 37185

Dubro 600RV 6" Diameter Big Wheels (Pack of 2) ProductID_11438045 It does navigate O27 curvesThis is a Dubro 600RV 6 Dia. Big Wheels (2). Smooth inflatable tires with positive seal air valves. Features two piece bolt together hubs and hub caps. Wheels can be inflated (or deflated) thru a tiny valve in the side of the tire. Axle diameter size 5 32 (4mm) Condition: Factory New Operational Status: Functional Original Box: Yes Manufacturer: Dubro Model Number: 600RV MSRP: $48. 00 Category 1: Other Scales RC Category 2: Wheel Assembly The Trainz