Pre rinse with pressure washer Karcher K5 before wash with foam?

[PeteT19640]

Hi looking online some people pre wash before snow foam and some don't.

Does this depend on something?

Thanks in advance

 

[Bosko]

if the vehicle looks like this then I'd say yes...other than that it's up to you

 

[PeteT19640]

if the vehicle looks like this then I'd say yes...other than that it's up to you

Thanks for that.
Its not that dirty.

Its coated in a PPF.
What i'm going to do is

Foam with Kwazar pump pressure Foamer with Wolfgang Auto Bathe
Let sit for 3-5 minutes
Use a few microfiber towels to wipe away dirt
Rinse
Dry

Is this method ok or should I rinse first.

I have no bucket etc.

 

[DFB]

Depends on the car for me.

If it's one of mine, no pre-wash foam. I rinse, then foam and do a contact wash. Keep in mind this for merely dusty cars.

If its someone else truly dirty car, I generally foam the car from dry, rinse, re-foam and do the contact wash.