I just bought a set of Nokian wrg2 tires and they are supposed to be LRR. They are working really well for me although I have not collected enough data yet. Incredibly quiet even on wet roads. Max 51 PSI with a canola silica compound. They have your size in an all season i3 I think. 620/A/A They are a very green comany as tire companies go. The first to offer non toxic tires.
Also there is the bridgestone RE92 XL which is an OEM for the fist gen Prius. They seem to be an OK tire and LRR. (50 PSI) Mediocre reviews though.
There is also the
BS B381 which is the lowest RR tire going.
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