The lipid bilayer is a thin polar membrane made of two layers of lipid molecules. These membranes are flat sheets that form a continuous barrier around all cells.
Wheel repair cost between $125 and $275 per wheel-depending on wheel size and damage. Typically the repair cost is still less than a new wheel depending on the style, size, and age of the wheel. Factory and aftermarket wheels can cost anywhere from $100 to over $1000 per wheel.
Maintenance and repair costs vary depending on usage. For a luxury fifth wheel towed by a medium-duty truck approximately 25,000 miles a year, RVersOnline.org estimates basic repairs for both the truck and fifth wheel of $1,250 a year, with new tires every two years adding another $2,400.