Quote:

I prefer the larger caster...easy to move on uneven ground



They are 8" dia x 2" wide casters. I haven't had any problem getting on or off a car trailer. Gravel driveways may be a problem, I don't have personal experience with these on gravel. I would go with airless wheels. The sad truth is that many of these casters are going to be on the car for years. Who wants to deal with low or flat tires?