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      11-28-2021, 10:49 AM   #1
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Question Convertible undercarriage wash

Quick question that didnít occur to me until I bought a convertible. How do you guys clean the undercarriage of the car? Automated no touch car washes donít seem to be a good option for the soft top. We got a light dusting of snow the other day and the local DPW dumped more salt on the roads that Iíve ever seen in November. I wasnít quite ready to put the car away for the winter yet. I donít want to leave corrosive salt on the undercarriage if I pick some up on my next drive. Thoughts?
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      11-28-2021, 08:37 PM   #2
John in VA
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Pressure washer or lawn sprinklers work.
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      11-28-2021, 11:34 PM   #3
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Quote:
Originally Posted by John in VA View Post
Pressure washer or lawn sprinklers work.
I like the sprinkler idea. Iíd imagine it would be difficult to get under there with a pressure washer without lifting the car somehow. Thanks for the thoughts.
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      11-29-2021, 12:44 AM   #4
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https://www.amazon.com/Mingle-Pressu.../dp/B07K22DGRY

Something like this could work as well if you have a pressure washer with the correct fitting.

Had a neighbor with a jeep that would clean off all the mud from under the car with something similar
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      11-29-2021, 07:51 AM   #5
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Quote:
Originally Posted by Mogki View Post
https://www.amazon.com/Mingle-Pressu.../dp/B07K22DGRY

Something like this could work as well if you have a pressure washer with the correct fitting.

Had a neighbor with a jeep that would clean off all the mud from under the car with something similar
Thatís awesome. I had no idea such a product existed. Iíll definitely look into that or something similar. Thank you!
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      11-29-2021, 09:16 AM   #6
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I'd be careful that much pressure.
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      11-29-2021, 08:13 PM   #7
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Quote:
Originally Posted by 60_Driver View Post
Quick question that didnít occur to me until I bought a convertible. How do you guys clean the undercarriage of the car? Automated no touch car washes donít seem to be a good option for the soft top. We got a light dusting of snow the other day and the local DPW dumped more salt on the roads that Iíve ever seen in November. I wasnít quite ready to put the car away for the winter yet. I donít want to leave corrosive salt on the undercarriage if I pick some up on my next drive. Thoughts?
The manual in my Ď15 recommends a soft cloth wash as being safe (agree donít do touchless as you pointed out). I usually take my car to the do it yourself spray in the winter but a few times Iíll do a soft cloth wash from a reputable place to make sure the undercarriage is taken care of and its worked so far for me.
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      12-01-2021, 01:23 AM   #8
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Quote:
Originally Posted by CDNick View Post
The manual in my Ď15 recommends a soft cloth wash as being safe (agree donít do touchless as you pointed out). I usually take my car to the do it yourself spray in the winter but a few times Iíll do a soft cloth wash from a reputable place to make sure the undercarriage is taken care of and its worked so far for me.
Thank you for the feedback!
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      12-30-2021, 08:16 AM   #9
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I've had 3 convertibles over the course of about 15 years, 2 BMW's 1 Porsche and I've never had a brushless wash EVER damage a top.

Seriously, go get one, with an underbody spray,

There is an attachment you can buy for a preassure washer, which looks like a broom on wheels, you roll it under the car and it sprays water underneath

BUT honestly, just take it to a touchless.

I've even used a carwash with brushes, not recommended but once in a while no problems. Micro scratches, MEH, a I said in 15 years I've used car washed both brush and brushless with no problems

BMW's are pretty good when I comes to car washes

Quote:
Originally Posted by 60_Driver View Post
Quick question that didnít occur to me until I bought a convertible. How do you guys clean the undercarriage of the car? Automated no touch car washes donít seem to be a good option for the soft top. We got a light dusting of snow the other day and the local DPW dumped more salt on the roads that Iíve ever seen in November. I wasnít quite ready to put the car away for the winter yet. I donít want to leave corrosive salt on the undercarriage if I pick some up on my next drive. Thoughts?
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      12-30-2021, 08:18 AM   #10
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something like this

https://www.aliexpress.com/item/1005...048257bd940e51
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      12-30-2021, 08:19 AM   #11
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around 50 bucks
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