140 M5B on a KDX
here in the great state of oh-ree-gone..., M5B's tend to be pretty popular. they work great in the extended wet, muddy, winters; work pretty well during those days in the dunes or on the beach; and are at least passable in the hard. they're relatively cheap, and last well. i got a buddy who's absolutely sold on 'em & runs 140's on his KDX220, with plenty of clearance for the chain. having been thoroughly roosted by M5B's on several occasions, i can vouch for their ability to drive. i ran 'em on my recently departed RMX, and have used them on my KDX. and..., contrary to popular belief (they are "directional"), you can reverse them pretty well when the knobs round off. their big hard knobs hold studs well, too. like i said, they drive well, but i think S-12's drive at least as well, and hook up better on their side's (a particularly slick side-hill comes to mind). i'll probably start with S-12's again this winter & see how they hold up from start to finish. i wouldn't be at all hesitant to run M5B's, and may do so late spring for the transition between muddy-soft and clay-hard. ride hard!