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Technical Bulletin: Goodyear DOT Radial RCMD - Provisional Classing as "Autocross" for ST4-6-- 6-10-21

Greg G.

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  • National Staff

Technical Bulletin 6-10-21

Goodyear DOT Radial RCMD tires

The Goodyear DOT Radial RCMD tires will be Provisionally classified as "DOT approved R-compound Autocross tires" for ST4/TT4, ST5/TT5, ST6/TT6.  NASA will be doing our own testing of these tires in the future to determine if this is the appropriate classing/grouping.  So, until further testing and further notice, these tires are not permitted in ST5/TT5 and ST6/TT6, and are permitted in ST4/TT4 using the Modification Factor for DOT approved R-compound Autocross tires. 

Note: These tires are permitted in ST1/TT1, ST2/TT2, and ST3/TT3 with additional Modification Factor.

Edited by Greg G.
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