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My front tires are rubbing slightly and I would like to know how much negative camber I can dial in without using camber plates. I am running Bilstein HD's? The fender lips have been rolled already. The rolling diameter of the tires match front and rear with 245/285. If I go with a narrower tire in the front, the diameter will not match the 285's in the rear using PS2's. Thanks
Scott, the 19's and 245's and lowered posture will make things tight in those wheels, but depending on what your current camber is at, you probably have more room in there to increase it.
You're also going to increase the camber in the rears, right? Otherwise, your handling characteristics (under/over steer) will definitely be effected.
How much camber you can get depends on the ride height (lower allows more). The only real way to know is to try. At the USA SUV height, my car maxed out at -0.5.
Does it rub on the inside or outside? (I assume it's outside and that means adding a small spacer is not a solution for you.)
My front tires are rubbing slightly and I would like to know how much negative camber I can dial in without using camber plates. I am running Bilstein HD's? The fender lips have been rolled already. The rolling diameter of the tires match front and rear with 245/285. If I go with a narrower tire in the front, the diameter will not match the 285's in the rear using PS2's. Thanks
Regarding tire diameter/rolling radius, I thought that Porsche staggered them very slightly on AWD cars so as to preload the viscous coupling .... the larger diameter & therefore lower rotational speed on the front. Just a point that occurred when matching diameters was mentioned ..... and absolutely pointless if the AWD was disengaged
How much camber you can get depends on the ride height (lower allows more). The only real way to know is to try. At the USA SUV height, my car maxed out at -0.5.
Does it rub on the inside or outside? (I assume it's outside and that means adding a small spacer is not a solution for you.)
Rubs on the outside, therefore needs negative camber to move tire away from fender.
Scott, the CEO of my company has the exact same car with the exact same wheels and the exact same height...heck, it's even the exact same color!
He just got his alignment done a couple of months ago and the car is perfectly balanced without rubbing issues. I drive his car from time to time and his setup is the most agressive you can have for city driving without suffering from railing on city streets. I'll speak with him tomorrow and post his numbers for you.
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