There's always email, then.
I don't know about you, but when I send an email, I generally expect a response within 24 hours. If I need an answer sooner, then it's pretty hard to beat the ol' telephone.
I've dealt with large companies in the U.S. that offer live chat with customer service reps, and I agree that it's nice, but I can't see that being economically feasible for a smaller Canadian outfit such as TireTrends. Especially if their goal is to keep prices reasonable, which is what I'm usually most concerned about when shopping online.
One other point... this forum isn't an "online store", it's simply a place to gather and exchange information. If TireTrends isn't responding to orders placed through their website, that's one thing. If Morty isn't here on this forum 24/7 to answer everybody's every little question, well, to me that's not such a big deal.