Shop around. I've gotten from etrailer a couple of times, and HF, and Walmart. Whoever had the best deal. Although sometimes it's worth a few extra bucks to buy in person and not deal with shipping.
Although I think if you read the fine print the HF tires might say 55mph max on them. Might have changed, which is why one is always stuck doing research.
2011 Toyota Camry, base, 2.5L/6MT, 206k
2010 Toyota Tundra DC, 4.6L/6AT, 160k
2003 CRV, 2.4L/4AT, 161k
1999 Toyota Camry LE, 2.2L/4AT, 225k