INSIDE IS ONLY USED WHEN YOU ARE INTERNAL PREPPING A TIRE. DO NOT USE FROM THE OUTSIDE. GENERAL RULE OF THUMB WHEN USING INSIDE IS, THE COLDER THE AIR TEMP, THE MORE INTERNAL PREP IS NEEDED. INSIDE WILL DROP DURO AND BUILD SLIGHT BITE. IT IS VERY TIRE BRAND SENSITIVE. NEVER EXCEED 5OZ OF INSIDE. EVERY 1OZ WILL DROP AND AVERAGE OF 3-5 PTS. CHECK DURO DROP 36-48 HRS AFTER ROLLING. ALWAYS ROLL TIRES 7 DAYS AHEAD OF RACING.