Here's my situation, I just threw on my winter tires which aren't in great shape, but I was hoping would last through the winter. I went out this morning and one of them got an unfixable rip in the sidewall. I also have two other snow tires with approximantelly the same amount of tread on them, but with a different tread pattern that the other four. So my question is, can I run one set on the front and another set on the back? I thought I remembered reading not to do this a while back, but I wasn't exactly planning on buying a set of snow tires after just spending $700 to replace my summer tires. Thanks.