SLW = Soft Long Wear compound, it's their second hardest compound and it reacts extremely well with PB Blaster to get amazing grip that rivals JC tires.
I spray PB Blaster into an empty shock bottle or you can buy one that comes with the perfect applicator like this...
JConcepts is notorious for being out of stock, simply because they are extremely popular.
Have you tried saucing the RawSpeed tires?
I have found that PB Blaster on SLW is a great combo for outdoor tracks, their Gumball compound is the shiz with PB Blaster too!
I have been recycling my...
Not all brands of tires have stock issues, you didn't specify what class, but I'm going to assume 1/10 2WD Buggy
Consider RawSpeed who generally does a good job keeping all their inventory in stock:
https://rawspeedrc.com/tires/1-10-tires-with-inserts/
There will be exceptions depending on...