Originally Posted by BriGuy
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The final caveat -- and this is important -- is that I did my trip in a car I borrowed from my grandmother, and not in a rental car. So I could "legally" make the trip. Last time I checked, if you're renting a car, every rental car company agreement you sign will prohibit you from driving on the South Hana Highway...
I wouldn't worry about the rental car issue on the Pi'ilani Highway...the road has more rental cars than local cars. You need to be prudent and careful while driving, and there are some pothole and gravel spots, but the drive is fine - as long as the roads are dry. If it's been raining, stick to the Paia-Hana route only.