Your Discovery TD5 vibrates at the rear, which occurs when driving between 60-70 mph? It’s most noticeable when going downhill on overrun and applying the accelerator gently. The vibration seems to appear when the engine has picked up to the same speed as the foot off the throttle and put it back on again, the vibration reappears.
You’ve had the transfer box and various other parts changed but the problem persists. The vehicle has done 32,000 miles and is due its first MOT. It is extremely difficult to diagnose a vibration problem; however, we would concentrate my efforts on the rear propshaft and propshaft coupling. If all of these are regarded as normal, then the rear differential would be next on my list for checking. I am assuming of course that you have already checked the tyres and wheel bearings.
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