because on the IPL convertible they stiffened the chassis for a more performance oriented ride.I'm just not sure why they made the convertible so expensive. I didn't want a convertible anyway. But if my heart was set on one, I might look elsewhere with this pricing.
Why a $7,500 mark up for a convertible without IPL, but a $10,250 mark up from the IPL coupe to the IPL convertible? Doesn't make much sense to me.
I've seen some comparison tests and I think the numbers of the IPL versus the standard G37 coupe are pretty much negligible. There might be an additional sensation of power, but when it comes to track numbers, there's not a huge amount of improvement.The IPL is a bit quicker but not by much