Thoughts on Polyurethane Lips/Diffuser?
For those of you who have Polyurethane lips have you noticed if it has caused your bumper to sag/crack or any adverse effects? I bought one off ebay and it felt insanely heavy, I returned it and have been casually browsing for another one but all of them seem to be polyurethane.
Anyone with polyurethane lips care to share their experience?
Thanks
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BMW E93 M3 / Mercedes Benz W209 CLK500
BMW E64 650I(sold) / BMW E92 328I(sold) / BMW E46 M3(sold) / BMW E92 335I(sold)
Porsche 996 911 C2(sold) / BMW E46 325CI(totaled)
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