What we are concerned about are called mold release agents so I asked the manufactures about their mold release agents and tire break in...
Dunlop
Thank you for taking the time to contact us with your Dunlop
motorcycle tire questions. Dunlop Motorcycle Tire does NOT use a "mold
releasing agent" during the production of our tires. When new tires
are fitted, they should not be subjected to maximum power, abrupt
lean-over or hard cornering until a reasonable run-in distance of
approximately 100 miles has been covered. This will permit the rider
to become accustomed to the feel of the new tires or tire combination,
find the edge, and achieve optimum road grip for a range of speeds,
acceleration and handling use. Be sure to check and adjust inflation
pressure to recommended levels after the tire cools for at least three
(3) hours following run-in. Remember, new tires will have a very
different contact patch and lean-over edge. New tires, mixing a new
tire with an used tire, and mixing tread pattern combinations require
careful ride evaluations.
Bridgestone
Break-in Period
In order for your new tire(s) to provide optimum performance, tires
should be ridden very cautiously for the first 100 miles in order for
the tread surface to be “Scuffed-In” and work properly. Directly after
new tires are mounted, sudden acceleration, maximum braking and hard
cornering must be avoided. This will allow the rider to adjust to the
“Feel” and handling characteristics of the new tire and for the new
tire to be “Scuffed-In” correctly in order to achieve optimum grip
level.
Pirelli
Hello
Pirelli does not use mold release. Tires are shiny because the general
buying public demands that visually a tire look cool, smooth, shiny,
and new when they shop for tires in the rack at the dealer. We rely on
the smoothness of the mold to get this appearance and to help the tire
let go from the mold during production.
I like to say tires are like new shoes, MX boots, or a leather jacket
as they need the proper break in time. Regarding getting heat into
tires this follows the same idea, only time and friction will put the
heat in. I have attached a copy of the brochure so you can read about
break in suggestions in the technical area. Ride safe
Michellin
Thank you for your email. We appreciate the opportunity to serve you.
Concerning your question, Michelin has a mold release agent on all
motorcycle tires. This will cause the tire to be slippery in the first
few miles, but that goes away after the tire is scrubbed in. This
normally occurs in the first 25-50 miles or so. Until then, the rider
should use caution in riding the tire at accelerated speeds. Michelin
always recommends obeying the speed limits and using care whenever
riding.
****************************************************************************
My advice is you don't need to risk the bendy bits to scrub in new tires to the edge... just
practice your 25 ft circles nice and slow so you can save it...