Typically SBR becomes "harder" at temperature, further improving tyre wear resistance. The Semi-Hot Melt additives provides the "softer surface" to enhance grip under acceleration, braking and sharp cornering.
Reviews and thoughts from Michael Bertrand here and here at NAMI Electric BURN-E/BLAST/KLIMA/ Electric scooter
Images below from Joe Holden (Kaabo Wolf King GTR, Wolf King GT and Wolf King+ Owners Group).
Fitted to Teverun Fighter, ready to replace worn 36PSI with 50PSI DynoRoad (SHM) on the Warrior and Fitted on the Warrior.
Image below provided by eScootNow customer shows clearances when fitted to Teverun Fighter and inflated shape.
Image below show tyre fitted to front of Elektro Ultra 10 Pro, extracted from Kevin's video.
Comparison of uninflated sizes across larger 11" tyres, with DynoRoad SHM 100/55-6.5 being the 2nd tyre from left with PMT's either side (90/60-6.5 & 100/55-6.5). DynoSlick 90/65-6.5 on far right.
Image below shows the discontinued tread pattern of the ([XC|TH]-021-01) on the left, which has been replaced by the pattern on the right.
CST has recently started to produce a SHM tyre, identified with a dotted orange line or two orange lines as shown below. Nami Electric has started to make these available in market (as spares).
Here are some photos of the inaugural CST SMH NAMI Electric BURN-E/BLAST/KLIMA/ Electric scooter and NAMI Electric Scooters Worldwide Group.
This new CST appears to provide a more rounded shape compared to the previous green/blue line offering, the CST 90/65-6.5 (11") Road Tyre. It is understood this tyre is difficult to source and most CST agents in China have not seen this type, nor can CST supply this.