THE CASINGS and REINFORCEMENTS:
 | ||
1) Oblique thread, made with straight thread in different densities.
WHAT IS DENSITY?
This is the total number of threads per decimeter or tpi (thread per inch)
Three Examples:
• 33 tpi (110 treads per dm) for entry level tires or for abusive situations like
downhill racing or freeriding (big threads).
• 60 tpi (240 threads per dm) for the intermediate range (medium size threads)
• 127 tpi (420 threads per dm) for the top range (fine threads)
The finer the thread, the higher the density. It is an important characteristic
of a light, supple and fast tire. Higher density is not always better; it must
consider strength, durability and real world situations to provide optimized
performance.
Michelin Examples:
Road:
Pro2 Light, Pro2 Race, Pro2 Grip with 127 tpi (190 to 220 grams in 23-622 size)
Lithion with 60 tpi (230 grams in 23-622 size)
Speedium2, Erilium2, Orium and Dynamic in 33 tpi ( 265 to 380 grams)
MTB:
XCR DRY2, XCR MUD, XCR A/T., XCR Xtrem in 127 tpi
XC A/T, XC DRY2, XC Hard Terrain, Mountain Dry2 in 60 tpi
Country AT, Country Rock, Country Trail, Diabolo Cool, 2.20 Mountain Xtrem,
DH15, DH16, DH24, DH32
& DH Mud3 in 33 tpi.
2) Woven material
in various weaves for certain high end tires for anti-puncture reinforcements as
in Pro2 Race and Grip, Krylion Carbon and 2.5 Mountain Xtrem.
