"the DIY. First thing – measure your steering wheel. Write down your measurements and then subtract a little. I was using some Horween Chromexcel, and it can be very stretchy on the vertical. So cut your leather accordingly and then size down where appropriate. I wanted a really tightly stretched surface so it contours to the wheel, so I subtracted at least 1.5″ on the round and .375″ on the thickness...."