VanB wrote: ↑Fri Jan 04, 2019 9:43 am
Generally not with normal speed bumps or ramps but occasionally one is slightly too high or a ramp needs approaching on an angle. There is a plastic rubbing strip on the lower front lip which is cheap and easy to replace if you have too many incidents!
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My 991.2 C4 GTS has the -20mm chassis and front axle lift which is electro hydraulic however it drops back down again above 22 mph unlike the GT3 system which is electro pneumatic and stays up until 35 mph. Its also very easy to damage the front splitter has I found out earlier this year on a narrow, poorly surfaced road with lots of dips and humps. Despite having lift I was caught out descending a small undulating bump in the road, got above 22, the front lowered and the front lower splitter ploughed into the ground and was very badly scraped on the underside. You also have to be wary of scraping the brake cooling ducts as it's all too easy to rip those off too. Unfortunately, unlike the GT3 and Carrera variants which have a moulded black ABS splitter, the one fitted to the GTS is always painted in either black or body colour if you have the painted side skirts. The part only comes in primer and costs about £250 then you have to get it painted.
In the end I sanded my down as all the damage was underneath and not visible unless you got down and peered underneath the car and then painted it with a can of Satin Black from Halfords. As I have subsequently done it again, I'm glad not to have forked out £250 + the cost of painting it.
In summary if you have the -20mm chassis and don't have axle lift then you do have to be a bit more careful than driving a car with the standard -10mm chassis.