Had the p38 out for a long drive today. At one point in roadworks doing about 40mph I noticed a pretty worrying noise.
Sounded like a rubbing or scraping sound from the rear axle or something around there. Most noticeable when holding the throttle at cruise. Full over run or acceleration seemed to make it go away or at least become much less noticeable. At higher speeds I couldn't really hear it any more.
I also have a clonk noise when changing drive direction, eg shifting from reverse to drive, most noticeable at low speeds, which might be related?
Any ideas where I should be looking?