Ihave a minor delema, but no problem. I have a 95 a tipple blace 1995 roadster. i bought it almost new,2100 miles it came with EMT tires on it.I got 48,000 miles out of them when I bought new tires I bought the same tire to replace them,R255 45ZR 17 EMT in front and R285 40ZR EMT 17 in back they had air pressure sensor banded to the wheel to activate the system. here is the delema according to a chevy dealer it did not come with the option, and another dealer the car was too old for him to check.