A couple of years ago we lent the Mazda 5 to Jr & his wife for a long trip. I thought that the rear tires were getting a bit worn, and decided to replace them before they left. I was shocked to see cracking on the inner-facing sidewalls (but was really glad I'd decided to replace them). The outer-facing sidewalls looked fine. These are by far the lowest-profile tires I've ever had. When I was young, 78-series tires were standard, and 70s were hot stuff.
With these 50s, it's very hard to tell visually when they're low. I suspect we unknowingly ran them with too little pressure.
With these 50s, it's very hard to tell visually when they're low. I suspect we unknowingly ran them with too little pressure.