Maybe I'm showing my ignorance, but what does the computer have to do with tire size? I have noted faster acceleration just going to slightly smaller diameter 215/50 vs. stock 205/55. i would expect 215/40 to offer even better acceleration while lowering the car. i realize it would screw up the speedometer and odometer reading but who cares if i get better performance at 51,000 miles with no plans to trade. I also realize that a 6.5 inch rim is not big enough for 215/40, but when constrained by stock autocross rules, I'm willing to give it a shot.
Fastest Contour at SZ 2002 Auto-X. 10th in PAX out of 125. CEO of FOGEY(Fast Old Guys Emasculating Young-uns), Inc. Terry Haines, Chairman, Senior V.P.s: (alphabetical)JavaContour, Jet Mech, MFE, SeicoRacing, SVTSTS, Vern Kilburn. If your not a member, yet, wait a few years. I'm not just the CEO, but I'm a member, too. Working with the rank and file to get the job done right!
Historical:
63 TVR (1K in 74), 75 TR-7 (paid cash new), 79 RX-7 (zoom,zoom), 81 RX-7GSL (autobahn-driven),82 Mustang GT (autobahn-driven), 85 Mustang GT (SE Division F Stock Solo II Champ), 86 MR-2 (3rd SE Division D Stock), 88 Civic DX (had 1st born and still owned MR2) 92 Sentra SE-R (all go and no show), 98 EO SVT Contour (FTD SZ 2002). 02 Altima 3.5SE 5 spd!!!
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