Originally Posted by 46Tbird
Most modern tires recommend 35-45psi for fuel economy and there is NO WAY you're going to be able to hook up on a rock hard 40-series tire with ~400hp and a stick. There is a difference between "take some air out" and "take it down to the air pressure you run in a slick." Most of these guys would get a better launch at ~25psi than they will at 40.
*edit, treed by junkie
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The idea is to remove the air pressure enough to make as much of the tire as possible contact the pavement. The compound of the tire with how soft/hard it is will create the traction with heat from the burnout. I'm with you there on all of that.
A tire like an Invo that is a real performance tire being a softer compound will benefit from a good burnout. Also, being an aftermarket tire is most likely a larger tire as well. I can definitely see what you are saying applying to that.
I just don't see it applying as well to someone on a stock 235 Pirelli that is a harder compound designed for all seasons and the side wall is not meant to give at all.
I also agree with you that some people let out way too much air on a street radial thinking they are getting the same effect as they would on a slick. The same could be said for a overly inflated tire.
Originally Posted by KungFuHamster
I agree a quick spin of the tires is good to knock the rocks off or any accidental moisture the tires may have picked up going around the waterbox. I usually just do a quick spin.
While my times are embarrassing, I can't believe how consistent I/my car was...especially running on street tires with a stickshift. .005 difference between my two passes? that's insane.
113 mph...I should be in the low 12s/high 11's. Oh well. I'll leave the ET on the track and save my tranny. Though I have my answer to my other thread. Screw a blower, I am going to start looking at a magnum swap. What good is 200 extra hp if I run 12's at 125 +mph? That's just foolish.
One thing is for sure. The AUTO is the way to go fast in these cars.
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The auto are definitely much easier to make faster. I agree they are way to go if someone is planning on tracking the car often. But my car is mainly a street car and I still prefer to row gears on the street. Gives more of the drivers experience feeling connected to the car.