Actually some aluminum rims are heavier than steel rims. Aluminum is a bit more than 1/3 the density of steel (.1 lb/in^3 vs .28 lb/in^3) So if an aluminum wheel is 3 times as thick as a steel wheel it will be heavier. Most of the cast aluminum wheels are pretty thick, and heavy. Steel wheels vary in thickness quite a bit too. I run steel wheels.
A forum community dedicated to custom off-road vehicle owners and enthusiasts. Come join the discussion about trail reports, builds, performance, modifications, classifieds, troubleshooting, fabrication, drivetrain, and more!