I just bought tires from the states as well and got them shipped to buffalo, I brought my ebay reciept as well. At the border they asked me how long I was in the states for and if I bought anything while there. I said no, technically I didn't lie, I had bought them like 2 weeks earlier, I didn't buy them WHILE i was there, I just picked them up. And just drove home. I've never had my car searched, asked to open any door, etc, etc. I just pretend I'm a tourist. Obviously if I had new tires in the back seat it'd probably e a different story, luckily I can fit 4 tires in my trunk.
"Driving is like a narcotic, an addiction that can take over lives. It ruins people, breaks families apart, and even kills. Itís habit that needs to be fueled. Time, money, rationality, sweat, knuckle skin, and anyone who disapproves are of little importance to a driver, and are often overlooked. Hi, Iím Nelson, and Iím a drivaholic."