Recommended for use on foam tires and used rubber tires on asphalt, high oil content works great on foam and used rubber tires. Liquid Gravity LG2 tire additive. For foam and rubber tire asphalt. LG2 high oil content suits foam and rubber tire asphalt applications perfectly. For Foam tire asphalt, (nitro or electric) it is recommended to apply to the tire 45 min before the run, if still wet wipe the tires dry before the run. For rubber tire asphalt it is recommended to apply a small amount and let sit for 30 min. With its high oil content performance can be best by applying smaller amounts.