curious what rim you have those intensives on that it measured 23.8
    mm?
    
    mine are on stans alphas and they measure a 0.97-0.98 (~24.7mm) near
    as i can get with my calipers.
    
    only complaint with the intensives is that they take too long to
    wear out.  i have a set of the sectors i have been waiting to put on
    after the intensives are done and i can't wear the dang things out.
    
    bought a set of intensives in may 2011 and then another set in late
    2012 when i thought the 1st set was about done.  but, no, they just
    keep going.  finally wore one out and got a bad enough glass cut
    that i couldn't repair the other one.
    
    still waiting for the final two to quit.  that glass cut is the only
    flat i have had in 4+ years of riding this system.
    
    fwiw i ride these tires lower than typically recommended (55 front,
    70-75 rear) and find the ride to be pretty nice although i am sure
    it is not as nice as the 28mm sector and probably more sluggish than
    at higher pressure but the corner amazing.  hit a 1" or more thick
    steel plate when i was coming down rabbit ears pass at something
    close to 50mph.  didn't see it until the last minute, no time to
    unweight, slammed it with those tires and alpha rims and no pinch
    flat, no rim damage, no tire damage.  they paid themselves off in
    that instant.
    
    
    
    
On 6/27/2014 10:37 AM, Tapley, George L
      via Bike-racers wrote: