[sawdustdad]

Originally Posted by charlie105

I loaded 2 sets of tires with straight "up to -50° protection " RV anti-freeze" last fall. One set of Deestone 23-8.50-12 ags, and one set of Carlisle 23-8.50-12 turf-chiefs. The Deestones were new, sat outside all winter,and were never used on the tractor. They cracked around the chevron bars, and were exchanged by the seller for BKT ags. The Carlisles showed no signs of damage. I tested the RV fluid with an anti-freeze (ethelyne glycol) tester and it read safe to 10°. I understand that the RV fluid can actually freeze at much higher temp. than the -50° protection rating but does not expand untill it reaches -50. Could the anti-freeze have been responsible for the damage with a lowest temp of -20 this winter ?

I don't think so.