I also agree "round" is best , but I purchased Hankook knergy ST. They were comparable with the ecopedias, LRR and weight. Plus they have a great mileage warranty 70k . Plus max inflation is 51 psi. I run max psi minus 10% or 15%, and have been getting 4.9 MPKwh in the summer months. No issues in rain. I went through tire rack and u can narrow down ur choice with the eco focus filter. Good luck keep us posted.