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Registered
Join Date: Oct 2011
Location: Nova Scotia, Canada
Posts: 2,151
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I will update this since i started it. In sumary, with a passanger (300lbs more weight loss compared to last year, but 200-250lbs instructor), a new dansk sport muffler, more confidence in my brakes, and a s-car maf added from last year... Along with trofeo r's in 225/245x16 (vs my prior fresh 205/225 re11a's) i just cut my best lap time from last year from 1:27 to 1:22... And that was one of my only laps unubstructed by slower cars.
Increased comfort and confidence to push my car was probably the biggest cause of my gain, but the tires were great. At near estimated 2700lbs with both drivers included, i ran pressures at 26 front 34 rears, nitrogen filled. Rollover never went beyond the roll line (i kept it a centameter or two away. I could have gone lower in the rears, but i was happy.
They did well in light rain with a wet track (no standing rain), and came alive in the dry.
Based on my cars weight (2300lbs without driver), i anticipate to need 24/30 for pressures front to rear when i am solo, based on ratios to stock and weight loss compared to stock.
With a clear track and the 250lbs ballast removed, i can probably get into 1:19's.
I knew i was pushing pretty hard as my car was suffering a good amount of over and understeerin many corners, and generally trying to kill me. They say you are not driving fast enough if your car does not show it's handling weaknesses. The tires are pretty quiet so they don't give you much auditory warning for brake away, but I never got into any trouble that my butt sensor could not identify early and preventavly correct.
Sessions were only 20-30 mins, and traffic often slowed my progress so i cant comment on temps over time. What I can say is that they felt fast, a bit loose (good in my books), and very confidence inspiring.
This was both the fastest i have ever lapped in any car, the most challenging a drive i have had, and the most fun. I will get another set once these go out. I hope to get a season on them (8 days).
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1997 BMW M3 (race car) with S54 engine swap "The Rocket"
1984 Porsche 911 3.4 Carrera
1973 BMW 2002Tii
2016 Ford Focus RS
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