We have relatives who live about 8 hours from us in so. Calif. The road to their home travels through some high altitude mountains and sometimes the signs read "Chains Required" but we have never ventured up that way during snowtime/winter. Any suggestions on the type or brand of tire chains we should purchase for instances like this? We are hoping to drive up there soon and the later in the year the more likely it will be when snow is on the highway.