Around 300 degrees in the oven for 10-15 minutes does the trick. If the tires doesn't come loose easily just bake them a little more, You can use the inserts again if you like too, even the tires if you want to.
JMI Motorsport / Red Bull Racing
HB Cyclone TC - Schumacher CAT SX & Cougar SV
Advanced Electronics - Autopartner.se - Sav÷x - NorthTQ