Hey guys,
My car will be rolling in a few weeks and I'm gonna need some sticky meat to keep this sucker straight. So all you boys putting down 700+ in RWD what rubber are you using or have found to work best.

TIA
Raudel

 

Nitto NT 01...but you may need a DR.

 

Nitto 555R (their drag radial)

 

great tire but I think rear only in 315. after I wore those out I went with Toyo R 888's 335's in the rear for my RWD.

 

A road race tire will not get any traction at that power level. Need a drag radial. And the 555R comes in 335/30/18.

 

Agreed. 305/35/18 Nitto DRs' at 22 psi on the street. My car hooked from essentially any gear at almost 900 rwhp with an open diff. You'll love them.

My buddy Peter has run 315 NT01s at only 750 rwhp on his Proto 996 and would spin his a$$ off unless they were extremely hot. They simply aren't enough tire for a big power car.

 

Dive- Can I run a 305 on a 12" wheel and do I run the same upfront and what size?

 

235/35/19 in the front?

 

Raudel,

According to Nitto you can run a 305 on a 10.0-12.0 inch wheel. As far as the front, I ran the NT01 (r-compound) in 235/40/18 (I would not run the 555r or any drag radial up front). I personally loved this setup.

You can also get a hold of Brad (Acropora) and ask him what he thinks of the setup for the street...since he now owns my car and it still has the same tires on it.

Scott

 

How did this match-up do around corners and twisties? Was it setting off your psm more often than when you had matching front and rears?

Thanks

 

I tried 3 different setups over a period of about a year and this was the best I found for a combination of straight-line and cornering. My car actually handled better than my stock Z06 with this setup.

As far as PSM, since I was RWD...it went off relative to the amount of traction (or lack thereof) that I had out back. The type of tires I ran up front never affected it.

 

I spoke to Paul at Protosport today regarding the tire combination. He was concerned that the sidewall on the Nitto 555R would be to soft to sustain any hard cornering. I wonder if the 555R II which is for road course might be a better all around alternative for me.

 

The 555's out back definitely hook and have been fine for hard street cornering.
The suspension setup may be another reason for the good cornering however.
On my 993tt, 335/18 RA-1's were sliding left/right going down the quarter mile but that's with -3 camber.

 

Raudel,

No offense to Paul, but if he hasn't run them...he simply doesn't know. The 555Rs are not like BFG or M&H DRs. The Nitto sidewalls are very stiff in comparison and they handle very well. Normally, the Nitto DRs don't hook in a straight-line as well as the softer sidewalled DRs do (like BFGs or MTs)...but on our P-cars, with the engine out back...they hook very well.

**If you try running a 555R II at full boost on the street, you will be putting yourself and your car in a very dangerous situation. They will not provide enough traction.

Trust me. I have tested many different tire setups on my car..and this is best all-around setup you can run with the kind of power you'll be making. I would not steer you wrong.

IRT Brad's (my old) suspension setup, the car is running JIC coil-overs at GT2 height, corner-balanced, with mild negative camber. It's very similar to your stock GT2 setup...and will out handle my stock Z06 even with the DRs. Run the rear DRs at 20-22 psi, and the front NT01's at 38-40 psi.

 

Listen to Scott. The 555R is the closest thing you will find to the best of both worlds at your power level and goals.