[partialresponse]

OK. Thanks! I ended up ordering the set from ETAmfg.com (where I also ordered the Renn stands.) They are tall enough to prevent crushing the sides of the jack pad receptacle on the car.

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Originally Posted by partialresponse

Where did you buy the red jack pad adaptor for the Rennstand?

https://www.amazon.com/POTAUTO-Unive...st_sto_dp&th=1

Look like the same ones I have. Pretty sure I bought mine at ECS a loooong time ago but what I see there now is $30 a pop. I don't mind paying them a little extra but not that much for these things.

[disintegrator66]

Originally Posted by tracer bullet

https://www.amazon.com/POTAUTO-Unive...st_sto_dp&th=1

Look like the same ones I have. Pretty sure I bought mine at ECS a loooong time ago but what I see there now is $30 a pop. I don't mind paying them a little extra but not that much for these things.

I researched a bunch of these jack pad adapters and BMS was one of the very few (can't remember any others actually) that provided enough height to clear the receptacle on my 340.... These Potauto adapters did not.....YMMV...

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Originally Posted by disintegrator66

These Potauto adapters did not.....YMMV...

I just checked a few minutes ago, and they do for me. The BMW black plastic gizmo has about 1/2" in height inside, and these are slightly over 1/2" (the page says they are 0.6"). Mine goes in and solidly hit where they can hold the weight of the car, and there's still a sliver of daylight all the way around them.

[ShocknAwe]

Honestly I just roll the car up onto some 2x4s and then use a normal low pro jack.

I would not trust RennStands. IIRC there have been... Tipping events.

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Originally Posted by ShocknAwe

Tipping events.

I was thinking about that as well. You could angle them somewhat and make them pretty safe, I think.

Envision them being the ends of an X shaped pattern.

It made me think about my Esco's, too, the tripod shapes and ensuring that a triangle point is facing outwards.

I have occasionally put my snow tires under the car as a backup plan. Which I think is related to the topic to mention.

[ShocknAwe]

Originally Posted by tracer bullet

I was thinking about that as well. You could angle them somewhat and make them pretty safe, I think.

Envision them being the ends of an X shaped pattern.

It made me think about my Esco's, too, the tripod shapes and ensuring that a triangle point is facing outwards.

I have occasionally put my snow tires under the car as a backup plan. Which I think is related to the topic to mention.

Always put something under as a backup! I usually use my wheels as well.