Originally Posted by
MattDub
Hey guys, a little off topic but few things I have noticed and heard regarding the X vs M proline compound. You always want to choose a hardness based upon temp (i.e. 4,3,2). Then you want to choose M vs X based upon moisture in the track. M is primarily used for wet surfaces and X is for dry. Also X is slightly harder than M at the given compound. I have also heard X doesn't expand as much as M which might provide more stability at high RPM .
Thanks bud, helps a lot! X would definitely be a better choice for practice at Revelation. JBRL is hit and miss with the amount of water that is laid down so I'd keep both on hand if that is the tire I go with. Wont know until I try out the Gridirons though.