08-20-2020, 03:34 AM
Jhonny bt45 tires are not radials but bias ply whereas bt54's ( standard ) are radials, as long as they are a pair that's fine but just so you know.
Have you checked the rear tire on the center stand to see if it is not eccentric by rotating it?
A tire could be balanced by weight but still be slightly eccentric and transmit this through the rear suspension, which happened to me, it was less noticeable when under-inflated so it would absorb the eccentricity somewhat.
Yes, the rear brake caliper has a little play on it's two mounting bolts unlike the front calipers so it can slide on them as the pads wear down and self-align on the disk when activated but the caliper mount should be solidly in place clamped in by the rear axle bolt and capture the "anti rotation" stud on the swingarm.
Have you checked the rear tire on the center stand to see if it is not eccentric by rotating it?
A tire could be balanced by weight but still be slightly eccentric and transmit this through the rear suspension, which happened to me, it was less noticeable when under-inflated so it would absorb the eccentricity somewhat.
Yes, the rear brake caliper has a little play on it's two mounting bolts unlike the front calipers so it can slide on them as the pads wear down and self-align on the disk when activated but the caliper mount should be solidly in place clamped in by the rear axle bolt and capture the "anti rotation" stud on the swingarm.