I hear that a lot but don't really believe it applies across the board. I haven't compared BB height to my Sultan but 5mm is roughly 10% of your shock travel (7.5"x2.0" on the RIP???), which is roughly 1/2 inch of rear wheel travel. If your deep in the travel on technical terrain - you'd probably hit 170s too. Just my thoughts anyway....Vecsus said:I would suggest sticking with 175s. I ride a large RIP9 with 175s and get occasional pedal strikes when pedaling through technical terrain due to shock compression.