In article ,
"Newby" wrote:

Might be traveling to Cancun later this year, June or July. Is it advisable
to rent a car or depend on local transportation? If I go, I would like to
visit Mayan ruins. Any recommendations as to which to see?

Thank you for any help.

We were just there in late Nov., staying about 15 minutes south of Playa
del Carmen.
We had two day trips to ruins.
First to the more basic and less touristy Coba, where you can still
climb the pyramid.
The second ruin trip was to very very touristy Chichen Itza.
http://www.can****oday.net/ruins/map.php

As has been said these trips are long, the tour guides give you much
info and driving in Mexico is not to be taken lightly. I have no plan
to drive in Mexico, both because of the unusual driving conditions in
that area and the legal problems if you have a accident.
The Coba trip had a very worthwhile side trip to two Mayan homes where
they are still living a very basic life style. Out tour guide was half
Mayan and Spanish and was brought up in a Mayan village from age 5 to
15. We were very lucky to have him guiding us.