Goodyear offers an aluminum core bead for use in aviation tires. The patented light weight alloy bead core using aluminum results in weight savings. The traditional construction of the bead has a steel center wrapped by strands of high tensile wire. Goodyear has found a way to replace the steel core with aluminum. The weight savings on this tire equates to three pounds per tire. For more information visit www.goodyearaviation.com.