I had the dash warning that my right rear was low, Stop or drive under 50 etc...

I slowly drove through curves and straights to have a feel for handling, ended up going about 25 miles at 75 mph. Tire shop found a screw dead center in the tread and was able to safely plug and boot the tire for $14.95. Reset TPMS and all is well. There was 0 damage to the tire other than the screw in the tread.