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Originally Posted by jonszr1
Tires I have the goodyear dg-3s ithink is what they are.
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They have a "Y" service description and thus are rated up to 186mph when properly loaded/inflated.
I have seen Michelin provide speed rating data that indicated at a set of speeds what % of the max load the tire could take, and what additional pressure was needed. On some by the max speed rating, it could only take 95% of the max rated load, and required +5 psi additional pressure.
It might be worthwhile to contact Goodyear and find out what they recommend in regards to taking that tire to its top speed and beyond.
