Quote:
Originally Posted by Chiketkd
I think you guys are right. The RT-615 is a relatively new tire that replaces the ST-115.
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Actually the 615 replaced the RT-215
http://www.vulcantires.com/azenis_t.htm
I know the RT-215 had some problems with heat build up, usually only with more than one driver, or on extremely hot days. But I heard that was fixed on the 615's.