Premium Member 2013 SLK250
I do keep an eye on my tires but do not get down on the ground and check them. Just look at them as I walk by. Today I took it into the dealer for the annual service. Turns out the far inside of the tires are worn out. You do not see it unless you get down on the ground and look at the back side of the tires and looking across the thread you will not see it. The dealer does an alignment check when you take it in for service (it is free any time you want it done). The alignment is right near center on the charts. The tires have 43k and and 4 1/2 years old. There have been post of this type of wear over the years. Kind of common on SLK. Suggest you get down on the ground and check the far inside of the front tires, you can be down the the cords and not see it just looking across the tires. The dealer said bring it back after I get new tires and they will check it again to see if there is a change with new tires.