Parking car on flat tyres

I took my 4x4 to a garage to get nitrogen filled in the tyres. The mechanic deflated all the four tyres while the wheels were still on ground (he did not jack it up!) and it remained so for almost 40 minutes before the tyres were inflated.

Do you think this could have any negative impact on the health of my tyres?

Asked on 3 February 2011 by PsyDoc

Answered by Honest John
Strange thing to do. Could have damaged the carcasses, but probably not as long as the car was not moved while the tyres were deflated.
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