Mark: The bolt circle diameter on a Tiger is 4 1/4 inches, not 4 1/2. That makes the metric equivalent, according to my calculation, 107.95 mm. As the engineers say, "Close enough for all practical purposes". I also have a set of Panasports on my Tiger that I got from Dale and they fit perfectly. Cheers, Tod B382002384LRXFE V8 badges and a pentastar