It happened to me in the beginning.. we were able to update the software and it fixed the problem... my dealer said that we should check for an update every 6 months
Have you thought of doing the fuel filter... I like running the cheap gas from the local Circle K.. and have had to replace my fuel filter with a panty hose secondary type filter... it works pretty well~
What type of problems with the tires are you having? Just curious on what to look out for. I have enjoyed the stock tires on my Ridge.. we drive a little on the concrete to get to our favorite spots but so far so good.