Tires...wearing on both sides?

Normally, I’d say tire wear on the inside and outside edges indicates under-inflation, but at 37 PSI, that’s not the problem. Who’s gauge are we using to measure the tire pressure?

How can you assess tire wear at 700 miles? You haven’t told us what car you drive. If you drive a Porsche with high-performance tires that only last 3,000 or 4,000 miles, OK. Otherwise, how can you measure wear after only 700 miles?

We need to know what kind of car you drive. Please enlighten us.