posted February 25, 2003 03:12 PM
mineral spirits works the best. ive tested everything
track claw etc.
cut a blanket in strips wide as the tread long enough to go around the tire.
wrap the tire, pour mineral spirits over it till its soaked everywhere.
put the wrapped soaked tire in a 55 gallon drum bag, avail at walmart.
let it sit over night and check the durometer, usually 10 pts softer per day. they will harden back up about 10 pts after setting a day or 2.
its easy to go too soft, so do some testing.
i used it regularly on some very hard 75 new tires that got 2 pts harder per cycle, i was able to re use them for a long time, everyone else bought new tires every week, they were faster new first time out for time trials, but mine got soft and sticky after a few laps and were very cosistent.
when you first pull them out of the bag you can take rubber off with your finger tip, dont be worried they will not stay that soft.
i first started by testing a piece of tire i cut up and put in a ziploc bag, till i knew how long i wanted to soak them.