So, I picked up a really clean 08 a while back and immediately tore it down for a wide tire setup. Fast forward to recent installation of said kit, and I had pretty bad interference between the belt and the tire. This threw me a bit because due to prior discussions before deciding on the 280 setup, there wasn’t supposed to be anything like this unless I went with a 300, which was never really on the table. I pulled the wheel back off, shimmed the pulley out exactly .250” and reassembled. After getting the belt tight and the rear wheel true, I still have interference between the two as well as another area of concern. I have .055” of clearance between the tire and the belt up top and the belt is just barely touching the tire on the bottom. The other area of concern is clearance between the tire and the swing arm. With everything tight and true I only have .052” of clearance at the apex of the tire left of center. Now the swing arm issue I have no doubt can be remedied with some removal of material and maybe having to add back some weld. My biggest concern is the belt. How much have the 280 guys shimmed out the rear pulley and how have you kept it hub centric as the hub is tapered a bit? Also how much clearance would be at a minimum to be safe between the tire and the swing arm? I don’t really know how much the tires can move and grow.
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