yeah, supposedly the FK451s are the same compound as azenis from 4/32nds on.

go to tirerack.com & see how they compare in treadwidth & judge for yourself if the MX's will rub

 

it's actually not exactly the same compound as the Azenis, but close enough that the gearing makes up for it...

 

Tirerack has no such specs for the MX, already checked. I was originally thinking of using the MX for autox and track events only...I was very impressed with the fk451s though, planning on getting a set for everyday use. They seemed much more tolerant of heat than I expected.

 

Kumho MX data on Kumho website

Too easy.

 

Ahhh, thanks Loren.
These specs don't seem to help much in the end....they say the tires are all the same size pretty much, and if the F1s rubbed, then the Falkens should have as well.