Just a tip to avoid Hertz when renting, or at least give your car a good inspection prior to taking on the road. Our car pulled towards the left when driving and when I clipped a curb blew the tire.
We were lucky that a tire service store was close by and they had a replacement tire in stock. I asked the attendant to check all of the other tires at that time because this was the first day of our journey and I didn’t want any future problems. He indicated that the rear passenger tire was inflated at 25 psi, the driver’s side front was at 32 psi and the rear driver’s side tire was at nearly 50 psi !!! Hertz refused to reimburse for our costs stating their cars are inspected before and after each rental. I've seen several other Hertz related issues for Ireland reported in the news. Other than this unfortunate incidence, GPS helpful, and roads typically easy to follow if one concentrates.