bader$

Will a 8 inch d90 fit the front?

Z-man

Yes, it will.

-Z.

Rich Sandor

245's all around w/ A035R's would be awsome for a stock S2 or non-S 951.

The only downside is if you have a lot of power over stock, even 245's are not enough in back.

There is a reason though why 99% of racecars have enormous rear tyres...

SamGrant951

just hijacking-- Im buying tires today for 18x8 and 18x10 wheels:

Fronts will be 225/40 18

Rears will be either 265/35 18 or 285/30 18. Any thoughts? My 255/40's hold pretty well right now with lsd, so I dont need to go overkill for looks or bragging rights...but just looking for different thoughts/insight.

sorry to hijack, didnt really feel like it warranted it a whole new thread though.

Z-man

Sam: If I were you, I'd go with the 265's in the back. You already have too much grip in the back compared to the fronts with the 265's (result: understeer), and the 285's would just compound the effect.

BTW: You do have beefed up A-arms, right?!?

Then again, 285's would look mighty fine .... mightly fine.....

-Z.

Rich Sandor

Sam: How much power does your car make? If you are near 350hp I would probably go for 285's just to help with wheelspin. Also, do you have the 968 castor blocks? Apparently they make a big difference for the front steering w/ bigger wheels.

You can mess with a few things to dial out understeer
-Sway bars (if adjustable)
-Camber (or camber plates if you got em)
-Tyre pressures..

dave120

968 castor blocks have been mentioned a few time so far...pardon my ignorance, but is that something I should look into doing on my car? I'm running 17" 996 twists 7.5 and 9 with 225/255 tires. I track the car a couple times a year too. I don't know if I wanna know the price tag on them though

Z-man

dave120: how old are your A-arms? Are they stock? Is your car lowered? Be careful: track driven 944's with old, stock A-arms on lowered cars with 17" weels are prone to catastrophic ball joint failure.

(Search the threads -this was discussed here a while ago...)

-Z.

claw

running 225/245 for street. The front follows the truck ruts like a beagle with 225's.

pete944

Dave, yes get the 968 caster blocks. It's the part at the back of the control arm that mounts to the car with two large bolts. The 968 part has much less rubber in it. Call Paragon, they have them and it takes no time to install them. It should be real easy with your lift. The pair of them cost me $130.00.

Sam, my 18's are 225/40 and 285/30 No problem with clearance depending on offset. The offset on my wheels are 49mm front and 52mm rear. You may still have to roll the rear fender lip unless you run a lot of negative camber.

SamGrant951

Both my a arms have been rebuilt, but not beefier. I am going to do 968 castor blocks this time around with 18's, didnt mess with them on the 17s (should have, but didnt...)

Rich, right now Im guessing around 270ish HP, 285ish TQ. (Have a dyno chart from 3rd gear w/ baaddd A/F values..its better now (dynoed at 273/312 dynojet) more to come with tuning and a new turbo down the road.

Thanks for your input folks, oh and Dave castor blocks are around (??) bucks from Paragon I think. After hearing Adrials horror story and a few others in the past- Its time for the updated units.

edit: wrong on price I guess.

Rich Sandor

Sam - 270rwhp? wow. I'm making around 265bhp!

Mike Buck

My new 18's are 8.5's and 10's. I'm going with 265/35 fronts and 285/30 rears. Would do 295's, but haven't found any locally.

dave120

The A-arms are actually only about a year and half to two years old maybe with about 15k miles on them now. My left ball joint was going bad a while back not too long after we got the car, and we replaced both entire control arms with new stock ones. The price tag on that was nice, about $600! This was before Rennbay and the other places came out with the rebuild kits for the aluminum arms...

I'm not sure if they updated the part at a later time or what, but the new ones look a little different than the old ones, some extra little reinforcements and stuff that I noticed when comparing them side by side. With my new suspension work the car is lowered a little bit. Ride height from the ground to the bottom of the fender is about 24 3/4"

More money to spend...and I thought I was done for a while after all this last batch of suspension expenses...ahh well, if I don't blow it on the car I'll blow it on something else stupid right?

M@rk951

Im getting new rims soon 17x7.5 and 9's in the back and im going 225/255
I ran a thread like this and thats what most people suggested