do not ride for fun in i405 coz its not fun. some sections of pacific coast highway is slow and sometimes will go 15mph. you know why? coz the fucking tourist wants to slow down and enjoy the view. it happened to me twice. going to sanfrancisco and coming back.

ride the PCH and enjoy as much as you can. then hit up the mountains in malibu (mulholland hwy)

as for rentals, i believe you can only rent harleys. sportbikes are out of the question unless you guys know of some companies renting it for not-so-high-of a price.

Harley-Davidson Motorcycle Rentals & Motorcycle Tours - Honda
California Motorcycle Rental, renting BMW Harley Sportbike San Francisco Tours