Richard. The minimum ground clearance under the centre of the car, mid way between the front and rear axles is 100mm in may countries. Our Plus 4 had only 90mm when we got it home due to incorrect front springs and poor quality rear springs that were fitted by Morgan at that time. All were changed under warranty.

I believe that questions have been raised by the authorities in Australia over the compliance of the Plus 4 ride height.

At the time I did some research on speed hump standards. If I recall correctly the old standard was 9 cm plus a possible 1 cm. This was changed to 8 cm plus a possible 1 cm.

I have heard of people making successful claims against local authorities for damage caused by speed humps that were excessively high.

Peter

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