Man, I love this club. Someone always has an answer to ANY question. I've searched for a definitive answer until my eyes are dry and blurry but I'm still not sure. On the 2007 Element EX AWD - is this a viscous differential, a viscous differential with hydraulics, or something else? Oh please help me understand this. I hate the idea that I have to buy 4 new tires when at least 2 are still good. (I pick up a lot of nails so this could be a huge expense.) And can I buy Kumho Solus 21 for one axle and leave the OEM Goodyear Wranglers on the back? Different tire stores and mechanics have differing opinions. Online, I have seen that the E is supposed to be an old style viscous but that Honda uses hydraulics in the CR-V. Kinda hard to get a definitive answer. I need to buy pronto as one tire is now BALD and has a side to side cut - not deep but runs a half inch across. I just don't feel safe. Can you help? Thanks so much!