So far, I know I need to figure out if the rear control arm has been replaced
If your tire wear seems ok I wouldn't get to excited about that. We've never done anything to our control arms, no problems with tires. It might
be an issue, but don't assume it has
and I probably need to get some better tires before winter
Check the tread depth of what you've got, and post what the tires are that are on now. They're likely the OEM tires, and if the mileage is not too high will serve you fine for another year or two.
If they are down to 4/32" tread depth remaining, considering the time of the year, it might be time. If a bit more tread depth, but your area gets a fair bit of snow, you might consider getting separate snow tires on steel rims. Regular Civic rims are your best bet.
Snow tires are almost guaranteed to impact mileage due to higher rolling resistance, that's a given. But if you're looking to replace the OEM's with something comparable, I would research the Low Rolling Resistance options, or again you will take a mileage hit.
We just replace our OEM Bridgestone Insignia SE200-02 with Bridgestone Ecopia EP20. They are described as LRR, have identical tread pattern to the OEM, and worked out well so far. We got ours at Costco.
Regarding resets, most is done via persistant press of the SEL/RESET button. First mention on page 64 of our '06 Owners Manual. Maintenance Minder resetting is described on page 179, at least in our '06 manual.
What else do you think is important to consider?
1. Make sure you're registered with Honda, so that you will get relevant notifications.
2. There's a very recent software update just released that likely applies to your vehicle. It changes the car's behaviour, attempting to protect/restore the IMA battery. For starters check with the dealership; they can see if you have it.
Then, determine if you want
the update. There is a lot of debate on the subject. FWIW, we've got it. My thinking is that:
a) It might help
b) Not getting it might be an argument for Honda, to disallow a warranty claim if our IMA battery fails.
3. Just generally look over the usual mechanical maintenance issues. The Owners Manual spells it out. See if you can get info regarding the car's service history. Check the current state of the Maintenance Minder (check in Owners Manual). Have a peak at the engine and cabin air filters. Check fluid levels, and so on.