BMW cooling fan upgrade/

Gordiboy
Gordiboy Forum Participant Posts: 1
edited March 2014 in Towcars & Towing #1

Dear all,  I have a `59 plate BMW 3 series saloon (320d) and I want to fit a towbar to pull my 1300kg caravan.  I`ve heard that I should upgrade the car engine air cooling fan from a 300watt to 400 watt to prevent engine overheating.  This fan upgrade would be extremely expensive.  Has anyone heard of or is aware of this recommendation?

Thanks,