I have a 2011 Kia Optima. The O.E.M. Nexens will need to be replaced within the next 5000 km or so. I will be changing over to my winter tires in another month and a half, so the replacements for the Nexens need only be a summer tire. I have got it down to Michelin Premiers and or the less expensive Uniroyal Tigerpaws. There is about a $140 difference in a set of four tires. Recommendations?