Originally Posted by InspGadgt

I used to have a spreadsheet with 2 simple equations in it, one for the front and one for the rear. All I had to do was input the current tire diameter and it would output the sized ride height adapter I needed. It worked pretty good and would usually get me to with in .5mm of what I needed so it really cut out a lot of the guess work. Problem was I usually didn't have my computer with me so I kept forgetting to use it. Now that I bring one with me most of the time for my RS and carry a smart phone which could probably handle it too it may be time to bring it back.