I had to add 15mm spacers to clear BBKs and now I'm concerned that my low drop will trash my inner fender liners or worse. I never had much issue before but since adding the spacers my tires have already rubbed the inner wells a couple times yesterday. My tires are about 1/2" under the fender lip, I think a 1/4"- 3/8" lift would be much better. Was wondering if I put a hard rubber spacer between the under fender well and the triangle top strut mount be OK? Surely don't want anything dangerous, but has anyone tried this. Don't really want to get new springs, coilovers are in the works but would like an interim fix in the mean time. Thanks for any help you can provide.

I wouldn't do it.

No way. Besides, that would affect your front drop and if you are going to do that, do it properly with different springs or coilovers.

That would be the definition of dangerous.
(Rubber compresses and the bolts would come loose!)

Thanks guys, I guess I'll just take it easy until I get the coilovers, don't want anything falling off

Don't springs and struts compress/coil-up too?

Sure, they compress, but that's an entirely different thing. What he's talking about is essentially making the upper attachment point of the strut assembly a "flexible" connection, when it should remain rigid (metal-on-metal) so that it retains the proper torque on the mounting bolts. If you add a layer of rubber in there, and then torque it statically, it will initially be in stasis and achieve a fixed torque reading, but as soon as it encounters dynamic conditions which would compress the rubber (driving, deformation, degradation), the torque on the fasteners will be relieved causing the nuts to loosen. Additionally, there may or may not even be enough thread length on the studs protruding through the shock towers to get a nut on properly.

Bro what springs are you on?

B&G S2 springs. They're about the same drop as H&Rs and STechs, won't drop quite as much in the front on a 5AT G35 though. Nice springs, I'd recommend them for those wanting a semi progressive spring w/ an aggressive drop.

BTW, pulled the spacers and have since put the BBK dream on the backburner to make way for coilovers ASAP.