I damaged a wheel last week, so when replacing the wheel I decided to spend a little extra and get a wheel/tire combo sold as "Zero-Flat" by J Thomas. So it arrives today via FedX, excellent delivery time BTW. Anyway, it weighs a ton. The driver told me it weighs 125 lbs. It is heavier than my 8 lug Chevy tire+wheel. I only ordered 1 wheel/tire. Am I screwed? Do I need 2 to keep things even? Thanks for any input you may have.