JL222, Good Year did not recommend for us to use nor not to use bead locks, it is something I decided on after talking to the tire and rim engineers and a lot of other smart people on this subject. On the RMR our tire strategy includes proper control of the tire shape as part of the aero package, which includes running some very high pressures. But, Good Year did want us to use a rim with a higher bead lip to keep the tire bead from pulling. Tony