Try this ...
https://www.ebay.com/itm/126093879482?mkevt=1&mkcid=1&mkrid=711-53200-19255-0&siteid=0&customid=&campid=5338975767&toolid=10001&mpt=9831195
I went with Acer Racing 12x1.5x40
Torqued to 105nm (77.4 ft/lbs)
I'll re-check the torque after some driving this weekend.
The most important rules with titanium lugs are to torque them correctly DRY. No anti-seize, etc. and NEVER use an impact gun...
Swapped the Good-For-One-Year tires out for Michelin PS4S
Added 12mm hub centric spacers and 40mm titanium lug bolts
My observations:
~ Absolutely zero vibration at any speed.
~ The turn-in feels more predictable.
~ The on-center jittery-ness is completely gone.
I was able to drive on the...
It's really a shame that Lotus didn't use the Sparcos from the Evora GT in the Emira. Those things are supportive, comfortable and look the part.
If I didn't have Ice Grey interior I'd swap them out for sure.