Sidewall durability is important on an all-terrain tire because sidewall punctures are pretty much impossible to repair. To ensure drivers don’t get stranded with the KO3, BFG built an extra-burly ...
That is, does the noise come from tire/road contact (so no change) or from the engines (great change)? Does the vehicle speed matter, as in highway noise vs. local connector road noise?
Essentially the system uses a strip of foam which wraps around the inside of the tyre to reduce road noise as much as possible without any knock-on effect on grip, response or durability.