Track Wheel Setup - Square vs Staggered

[zvovchik]

Forgot to ask, what tire pressures are we talking about if going squared? Maybe i try put my existing 255 AS/3 up front and install new RA1 in the back for starters. Existing as/3 are fairly new and i live in portland OR, so im trying to have wet weather capability..back to pressures....What would be reccomeded?
Im thinking as/3 fronts would offset the grip with RA1 in the back. Am i tottaly wrong here?
Thanks

[Topless]

Originally Posted by zvovchik

Forgot to ask, what tire pressures are we talking about if going squared? Maybe i try put my existing 255 AS/3 up front and install new RA1 in the back for starters. Existing as/3 are fairly new and i live in portland OR, so im trying to have wet weather capability..back to pressures....What would be reccomeded?
Im thinking as/3 fronts would offset the grip with RA1 in the back. Am i tottaly wrong here?
Thanks

Completely incompatible tires. Your car would push like a pig all day.

Maybe choose some middle ground and mount RE71R on all 4 corners. This is a fast tire that works street or track. Almost as fast as RA-1 but works better on stock suspension. You will still toast the outer shoulders but a better fit than RA-1 tires.

[zvovchik]

What is the easiest way to adjust camber? Are gt3 arms required or is there a cheaper way while running stock suspentions? Maybe ill be better off just running staggered and get better tires? Hmm but still a camber adjustment is a requirement i understand, if i am to track it at all right?

[Topless]

Originally Posted by zvovchik

What is the easiest way to adjust camber? Are gt3 arms required or is there a cheaper way while running stock suspentions? Maybe ill be better off just running staggered and get better tires? Hmm but still a camber adjustment is a requirement i understand, if i am to track it at all right?

Lots of guys do lots of things to get camber in the car. Slotted strut mounts, camber plates, coil overs, lowering springs etc. All can work to some degree and there are a dozen threads here pontificating the merits of each. The top Porsche setup shops all over the country pretty much agree: "Just get GT3 adjustable arms." They make the setup and alignment process very straightforward and they will transform your car into a track worthy machine.

[zvovchik]

Youre advice and recomendations much welcome. Thank you!:dance:

[thstone]

Originally Posted by zvovchik

Im thinking as/3 fronts would offset the grip with RA1 in the back. Am i tottaly wrong here?

Trying to balance the handling with different front and rear tire compounds is the wrong way to go about it. Well, that is unless you have a large selection of tires to choose from and have time to do a lot of testing (which I am assuming you don't).

Here is the standard process to set up a car with one set of tires: Install the same tires on the front and the rear, THEN use the suspension to adjust the handling, THEN use tire pressures to fine tune the handling. And don't forget, the driver may need to adjust their driving technique to get the most out of any given setup.

In this case, the problem is that the stock suspension has no adjustability. The Porsche factory gets around this by doing tons of testing to find the right mix of tires (type and sizes), suspension, and tire pressures that result in the handling that they want. Without adjustable suspension and with only one type/size of tire, you don't have anything left to use for adjustment (except pressure which is not going to move the needle very far).

I've done lots of laps on RA-1's; shaved vs full-tread, heat-cycled vs non-heat cycled, in the dry and in the wet, but I've never mixed them with an all-season street tire.

Best of luck.