Update 10/11/09
Just a quick progress report since the last post. At the Grissom AFB auto-x the ambient temps were down in the low-mid 50s and although the car felt fine I did notice that there was an overall lack of grip. Also the previous 33/34psi setup did not work very well (possibly due to the high grip on the surface), causing some rolling beyond the wear bars on the tires. I upped the pressure to 35/36psi and it prevented roll on the sidewalls. There may be some issues with running these tires in such cold conditions without any chance to warm them up, hopefully at a trackday this won’t be as much of a problem.
Had some nice weather this weekend so I took the opportunity to finish off some of the work I had planned on doing to the car. This included a valve cover gasket change and an oil change. Used some Mobil1 5W-30 as it has worked well up till now, and went with a longer M1-110 oil filter (stock is M1-108) as per recommendations from a lot of the Miata forums community. Unfortunately I spaced out a bit and completely forgot to take a camera for pics. The only thing left to do is schedule an alignment job and get the pre-inspection sheet filled out before the trackday. Can’t wait, but hope that it’s a bit warmer than 50F out there…
