Walking out to the parking lot today I noticed a delightful little surprise in my rear drivers side tire (Mickey Thompson ET Street S/S 305/45R17). A nail! With the track day approaching in 4 days, I reacted quickly and used my best judgement and ordered a pair of new tires. I went with a Mickey Thompson ET Street R bias ply (28x11.5-17). I will post the pics when I get them mounted which will hopefully be before the track day.