That's not bad. Just need to keep checking them once in a while, and feeling for an out of round tire (a very slight hop at one corner at slow speed, on a smooth surface). I change my wheels, or have them off often enough that I roll them and look for high spots and expanded cracking in one area vs. the rest of the tire. Big cracks in the sidewalls worry me more nowadays (I've stopped using a couple because of that). I mostly only drive my van around town, but I recently took a 670 mile round trip on freeways and they were okay. My tires are 10 years old or older.
Age can mean something, or it cannot. I have some tires that are the same exact brand and model, but manufactured years apart (Michelins). The tires that are cracking the worst? . . . Are the newer ones!! Just beware of tires that use a lot of weight in one area, because that can mean the tire is starting to come apart inside. I had one that had a vibration, and got it balanced. It took a lot of weight. Used it for a summer, put it away for a while. The next summer I didn't use that wheel, and almost considered taking it along on our big vacation trip to the southwest as a spare. I took the other one that matched it. That tire ended up bulging/tread separation after a day of use. When I got home and found the matching wheel I'd put away, it was also bulging in one area (where the weight was, or opposite of it). It likely would have gone bad even faster than the one I brought along.
Age can mean something, or it cannot. I have some tires that are the same exact brand and model, but manufactured years apart (Michelins). The tires that are cracking the worst? . . . Are the newer ones!! Just beware of tires that use a lot of weight in one area, because that can mean the tire is starting to come apart inside. I had one that had a vibration, and got it balanced. It took a lot of weight. Used it for a summer, put it away for a while. The next summer I didn't use that wheel, and almost considered taking it along on our big vacation trip to the southwest as a spare. I took the other one that matched it. That tire ended up bulging/tread separation after a day of use. When I got home and found the matching wheel I'd put away, it was also bulging in one area (where the weight was, or opposite of it). It likely would have gone bad even faster than the one I brought along.
