Reading the instructions of a lowering springs kits says to get an additional .25" drop trim bump stops 40cm.

Wouldn't this mean that the suspension was nearly fully compressed and riding on the bump stops?

Does cutting the bump stops affect the ride height?

 

No, but it will affect hitting the bump stop and this is why it says to cut it.

 

On what many people would consider a "properly designed suspension",
would apply.

However, some lowering springs intentionally put the shock into the bumpstop at ride height, in which case cutting the bumpstop will lower the car slightly further than not doing so. The lowering spring is intending to use the bumpstop as a progressive spring to supplement the main spring in this case.

Personally, I'd stay away from any lowering spring that claims additional lowering by cutting the bumpstop, for fear of constant bottoming out issues.

 

heh, sounds like the instructions that came with my H&R Sport springs. Damn those were some POS springs.

 

i cut mine but it didnt affect ride height.