ATaylorRacing
04-07-2013, 09:28 PM
Old Matchbox was driving me crazy (yeah, right) last year due to being inconsistent. I was already to park it, but a few days ago went through all my old log books to see what might be wrong. I did not see anything, but did see that the only races I won were the ones where I left the huge 215/70/14 M/T Street Strip III tires/rims on it instead of the tiny 20.5x7.13 Hoosier road racing tires on the same brand rims, but 13s instead. The little tires/rims are a whopping 55 lbs lighter, but at SDAC22, the race before it, and the Import Face-Off at National Trail I kept the big tires on it due to bad discs in my back and the inability to swap them out. UMMMMM...even though the car was a bit over a half second slower it was more consistent by a bit. Today I again left the big tires on it for test and tune at Indy...all 10 passes were within .055...just like it USED to be. The smaller tires had nearly identical 0-60 foot times on every pass, so it was NOT a traction issue. It was also very windy with the wind going from 0 to over 15 mph. I am thinking that the bigger tires that also slow the mph make it more consistent in the wind since less mph equates to less wind resistance.