The organisation has previously been one of two business organisations - along with the Knutsford-based Forum of Private Business - which has actively opposed the scheme.
Following Sir Howard's presentation, made at the IoD's hub in Peter House yesterday, north west regional director Darrell Matthews announced his intention to review its policy.
"In the past, our members have had issues about the size of the proposed scheme and its potential impact on competitiveness and profitability," said Mr Matthews.
"Sir Howard started by presenting us with an overview about the proposals for the scheme - and one of the reasons why the scheme is so large is because of the necessity to look at all the traffic routes into and out of the city. As for competitiveness, Sir Howard's view is that the scheme will manage traffic better, which will make Manchester a better place for businesses to operate.
"The information that we have gained from this event will enable us to review our existing policy."
Representatives from the Greater Manchester Momentum Group (GMMG) - an anti-charge alliance with more than 110 members - and pro-congestion charge group United City addressed the IoD's members.
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Laura Norder, Didsbury (22/07/2008 at 10:02)
But, should the IoD - people that know a thing or two about business - come down on the side of the C-charge, there will still be the moaning minnies, consumed by self-interest and bitterness, complaining that they are being victimised.
I await their response with interest.