Without the run flat you can lower the air pressure. The bead lock stops the tire from turning inside the rim. It locks the bead in place. I have spun a few tires right off the wheel. Then you have to put it back on but then you have to use something flammable to get the tire to seat so you can inflate. With the bead lock I can split the rim put on a new tire bolt it back together and just add air. You can't do that with a regular tire and wheel. To change to a new tire the run flat is a real pain in the backside. I don't plan on taking any rounds through tire so they can go.
Like now I could not get the balanced at the shop. I will let the air out, split the wheel, throw in some BB's, bolt it up and add air. I will be able to do it right in my driveway with no special tools.
I could take the run flat out and cut off the part the sticks up and use the round part that hold the bead of the tire. But cutting a piece of PVC is easier and will weigh less.
BTW for those that live where it gets cold if you want to the balancing from inside the tire you have to add a little antifreeze. I may throw some in for good measure.
The guy selling the PVC inserts is asking about $50 a pop for them. I am not sure the width of the wheel but that piece can't be a foot wide. So I figure I could make it out of 16.5 PVC and only need four feet. I figure that should not cost that much. But I may just go ahead and by them if I can't find the pipe.
I would sure like a set of those new BFG's. But these look pretty good and the hubcaps go right back on
