I went a bit the bullet and brought a set of vogue tires for the 92. I was at a loss for what size. but the superior sticker said 225s and with the 235s the car read off 2 mph. so we went with 235x70s the load rating was the same as the 225 as is the diameter. so things should read correct now. they aren't the us royals that came on the car but they are still a nice looking tires. the plus is the suburban now has a full set of like tires on it and I can get the studded snow tires off.