Most liked posts in thread: Nitto NT-01 Tire Pressures ?

Thats the one!

 

Jeff and Mike were a huge help getting my car set up, from ride height, camber, toe and tire pressures. Everything they told me was spot on.

Higher tire pressures don't necessarily mean more grip, it's temperature dependent too, especially on the rears, which are just kind of along for the ride. It's hard to get a ton of grip back there anyway; higher pressures and relatively cold tire temps just don't work for me. I have no idea how Dick can keep his car on the road running cold tires with PSI in the 40's; maybe he's an ice driver in his spare time.

You might be able to replace your camber plates with ones that dial in castor--I have JRZ's going on as we speak (I misspoke if I said AST's earlier). I had KWv2's before, I can't wait to drive with the JRZ's on.

One other thing--I run staggered tires, 9 inch wide up front, 8 inch wide in rear. This makes a HUGE difference in grip. I run mainly Road America, which is also a high speed track.

I trail brake 5,6 and 8, and that tucks the nose in nicely on the apexes; I really don't like the rear sliding too much. I'm more point and shoot than drift. Also, if you lift (gently) to correct your line, lift throttle oversteer can really bite you in the arse, the rears slightly lower seem to help with this.

 

Different setup Chris... Made my own auto-X course in a private parking lot, and let her rip until everything was the way I wanted it...

Speaking of that, I may have to do it again if we dont get the rain they are calling for this weekend. The RS3's arent really liking the way it sits right now, but its close.

 

If you tried that at Road America, you'd wind up like that Lamborghini driver in Florida...
You'd be lucky to make it to the carousel, and if you did, you wouldn't make it to the end of the carousel...

Seriously, that's way too high for Nitto's. We've got to get you out your self made parking lot autocross tracks and onto a real track. Be kind of cool to get that thing out there. Tech may be a byatch for you the first time through though; that would be worth seeing just for the entertainment value alone. But I can vouch for this: warmed up Nitto's in mid to upper 30's are an order of magnitude stickier than cold Nitto's in the 40's. My street tires are stickier than overrinflated cold Nitto's.

 

Toyo Tires recommends the following general set up guidelines for the Proxes RA1:

Operating Temperature: 160°F to 220°F
Hot Inflation Pressures: High 30s to Low 40s (psi)
Camber: -2.5° to -5.0°
Caster: As much positive as possible

From: Proxes RA1 | Toyo Tires

 

15x9, +36, 15mm spacer, up front, 15x8 in rear, 8mm spacer. Everything is improved--acceleration, braking, cornering, and most importantly, lap times. Both brakes and coilovers on the inside come into play. I had the TSW setup before going to this, I thought the spacer was more like 1cm but it's been so long I'm probably wrong You might want to ask Way, he should know. I'm not 100% sure you're going to clear with the 949's, those calipers are wider and higher profile, although the rotor is only 11.75, mine is 12.19 so it probably will work.

I don't have my ride heights written down--they're around somewhere, but I can't find them. It makes a HUGE difference how you have the heights front versus rear however, found this out when one shop put the rear too low. It'll all be different when I get the car back anyway.

But Jeff's ride heights, if you still have them, are a GREAT place to start.