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					Originally Posted by CJ_Boxster
					
				 Where do you get "R-compound" from? if your referring to the R that comes after Z, as in 265/35 ZR 18.... R just stands for Rim as in Z-rated Rim size 18. Its on nearly every Z tire i've ever seen. Even the cheap stuff | 
	
 
R=Radial (nearly all car tires are radial)
the OP is correct, these are R-compound tires. Decent, but no longer competitive.