As per PM’s regarding Fan spec – see the pictures attached. Clearance to the passenger side fan is the tightest – the other side has a little more room. Motor depth is 63.5mm and a CFM of 1150 per fan.
The fans I used were Mishimoto 12 inch slim line. The critical factors are the depth of the fan & CFM it can pull.
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(Cables are temporary for now – they will be tidied!)
Although the fans do cool my 500E just fine it’s always nice to get as much air flow as possible. It’s cool here in Ireland most of the time so the fans aren’t under pressure. Not sure what temps you get in Russia but the higher flowing fan the better really. For example – on the tighter side run the 1150 CFM fan above (Or similar / equal) Then on the other side you could run a Race Spec Mishimoto 12 inch fan which can move 1850 CFM. This is also on the side of the Radiator where the hot coolant comes in so it would be effective and make best use of the space available since more depth is available on that side.
Also –
this controller is very good & is what I am using. Fully & easily adjustable. Install instructions are also available in PDF on Mishimoto's website.