Yes 7 to 8. I'm basing it on published tire weight versus total mounted scale weight which should be real close. I'll put a 14 and a 15 on a scale next dismount.
Update: Neon alloy spare combo is 16.65 total, rim only is 8.05 lbs. I'll get the exact weight on the PT alloy spare later, but it should be about 9 pounds.