295/50-15 Avon CR6ZZ works well as rear Tires and is to my knowledge similar in size to the authentic factory fitted Tires.
BTW front Tires are Kumho V70A in the softest compound available 225/50-15
JFB, here is a link to Avon CR6ZZ but I think the 215/60-15 mentioned are too large in diameter as front Tires.
http://www.avonmotorsport.com/historic/historic/cr6zz
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