I got the car last year popped one of the front tires and only had the money to replace the front 2. Today I wen to get some new back tires because they are bald and im going on a 400 mile road trip to Ohio in a few days. The tire place told me I neede to replace all 4 tires on any all wheel drive car. I have a 99 GSX. I thought they were bull shitting me so I went to another place where they put 2 new tires on the rear of my car for me. So my question is will this really ruin my driveline or whatever that guy was telling me about?