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Slicks and contact patch


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I am currently running 26x8.5x15 drag slicks on a 7 inch rim. I adjust static camber to be 1 degree positive at rest so that the tires will be close to zero camber on launch. I can also fit 26x10x15 on a 8" rim in the fenders if I adjust static camber to 2.5 degrees negative. I run 15 pounds of air pressure. Other than trial and error with 60' times, does anybody have a feel for whether I should use the wider tire with its associated required camber (which will be more than 2.5 degrees negative under acceleration) or stick with my skinnier setup?

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My dad went through all that with his VW beetle. It all came down to personal preference. He had better 60 foot times with the wider wheel, tire combo. 1.46 compared to 1.56. That is using a 3.88 r&p with a 4.25 first gear on a 28" tall setup. Car weighed 1920 with him in it. Dyno'd at 188hp at rear wheels and a healthy dose of NOS 36 size jets squared, approximately 100hp. He had issues with breaking tranny's and ended up going with the spin to win attitude. Leaving at max rpm and try to control the spin with weight transfer, tire pressure and spring/shock setup. He did the same with setting up the camber with different springs etc.. 

 

The other issue he noticed was that the different tire/wheel setup changed the height of the combo. This which changes the gear ratio not much but it all adds up. He went with 5", 6" and 7" combos. From BFGoodrich M&H drag radials, M&H Slicks and Phoenix Slicks. 

 

As she said more is better!

Edited by tooquick260
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