If it dries out, or you get water/road debris in the joint, you could get stranded. Most places do not have a tool to replace the boot without removing the joint from the axle shaft. Most places will want to replace the axle assy. That can be done, depending on where it's done, for around $175. per side. The boot kit replacement will still be around #100.00. The replacement axle can have a ltd lifetime warranty.