Yes ...totally wheelchair friendly. It does get a bit wet and muddy due to rains. They also have a train which you can pay for and it takes you around the park.
I agree with the loacal guides It's pritey much wheelchair friendly bit bumpy from the car lot,
Alankar is right and let me add that no, you cant take a car through the path.
Yes, it is not paved, but it is flat and fairly hard packed. If it is dry it should be pretty easy to push a wheelchair around the loop. Wet and muddy will be a bit harder but still manageable with the right person pushing. You can also get a good taste of the park by just entering into the loop and going a little ways and coming back out. The steam train at Roaring Camp is also a great way to see the redwoods and it is wheelchair accessible.
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