Tire Question

First, let, me wipe the egg off my face. Ivylog was right on! I checked the date code and it was 0210. Wait a minute. I put tires on in spring of '13. Suddenly it dawned on me. I replaced the tires on the rear only! When I bought the MH early '13, the PO told me he had just replaced the right front tire(1012) and the left front tire was less than three yrs old. So I accordingly replaced the rear.
I think my course of action going forward will be to watch and protect the tire until the first of next year and then replace both front tires. Thanks for all the suggestions and responses.