I have several cars with summer tires and don't really worry down to about 35-40F as long as the roads are dry. A key factor is how the car is stored; mine are kept inside a garage that stays 55-60F so the tires start out warm and will stay fairly warm (my BMW M2 Comp TPMS reports temperature...
According to this pretty thorough evaluation, they are R14 and same as Porsche:
https://www.civicx.com/forum/threads/lug-nut-solution-for-nsx-wheels-solved.42281/
Can't confirm as I've never looked into this myself though. Always just gotten them from Honda and the radius was never mentioned...
I feel like 04-05 were the sweet spots -- they got the key AP2 improvements, cable throttle, nice 5V-spoke wheels, original seats with headrest cutout, and no stability control nannies.
I owned a 2005 and 2008 back in the day and stupidly sold them. Also passed on getting a 2009 CR at a healthy discount (they weren't selling too well back then). Dumb!
I started looking to get another S2000 in 2020, which was bad timing because Covid inflated valuations and pricing got...
Nice writeup. Hope your dad didn't look too close at the paint/clearcoat quality because it's pretty awful. I've seen better paint come out of high school shop class.
I have a 2005 S2K. While I feel that the ITS has got a very classic old school Honda FWD feel that I love (especially the...