Running a car with no undertray

[OnTheSauce]

Hi all,

Another query, if you don’t mind.

Same car (06 650i), and it has no front or centre undertray. They both cracked when I caught them reversing off a drive, so took them off.

A bit of googling suggests that it’s generally fine to run a car without an undertray, but not all cars are as complex as these (dynamic drive and a load of vulnerable looking pipework under there)

What’s the consensus?

Cheers

[bmwmike]

Fine for short term especially as it's generally dry but I'd be getting one ordered.

[buggalugs]

My E46 had the front one missing when I bought it,

I’d often run through puddles then hear the belts squealing like a 1980’s Ford because they’d been doused in water,

Also when I did finally get one off eBay the difference in wind noise on the motorway was noticeable. I.e. it was quieter.

[sortedcossie]

On some vehicles it can affect engine temps too, without running cooler than optimum.