After almost 21k miles, I have 7/32 to 7.5/32 on each tire. I think one is a little above 7/32, two are around 7.25/32 and the other is a little under 7.5/32, is that ok for wear since they're all different?
Is being around 7/32 normal or good after appx. 21k miles? My driving is mostly highway.
How many 32nds can I run them down to until they need to be replaced? I think law in my state is 2/32, but I'm not sure what traction, handling, or feel will be like at that. My guess is that is too low?