03threefiftyz

iTrader: (25)

Are you planning to use Hoosiers, etc? I think it might be a bit soon for that, Barnabas. It would be best for you to learn on street tires. The R-comps will only mask bad habits. Your car is basically an XP car with all the performance mods you have....it would best to get a bit more used to modulating the throttle and getting a better feel for your 400wtq. Do you plan to run SCCA next year? XP allows real (non DOT) slicks, and you will need them to play with the big boys in XP. The other question will be how much do you wish to keep your car show worthy....some mods that will help you may hinder the visual appearance. The slicks...even sticky street tires....are going to cause some serious rock chips, etc on your paint. If you want I can drive your car at one of the early events next season and see what I think about it?

I think Scott runs offsets in the mid-high 20's to clear his stoptech's with the 305's....I could be wrong.

Barnabas

iTrader: (15)

thinking about street tires for one more year... but just goign bigger. I was SUPER SUPER light on the throttle in the afternoon runs and my rear was still walkign around on me. It was bad I couldnt get anything until the car was almost completely straight maybe just go to a R comp or even just street radial just wider then take the step to slicks from there...

Ill stay with CDC till I feel ready to run SCCA it will be a while till I can be competitive anyway and I cant commit every single weekend with everything else going on.

03threefiftyz

iTrader: (25)

Sounds good....with the seat fixed I broke into the 34's on the same course on Sunday. About where I figured to be on saturday before the seat rail died, and made things a bit difficult.

Barnabas

iTrader: (15)

yea thats why I wanted you to drive my car saturday but since you needed the points I understood. I wanted to see if it was just me but after my 2 39's I tried to push a tiny bit more and just slid

scotts300

iTrader: (46)

Correct-a-mundo. The 305s are on 18x10 +38 wheels, and I was running a 13mm spacer in the front but just upped it to 15mm spacer to net an 18x10 +23 though the +25 seems to work as well. There is room for a 315 rear with a wide and high-offset wheel. My tires are Kumho V710s, and the A6s likely run a little wider.

285/30/18 max. I have seen a lot of guys run the 18x10.5 +15 with 285 tires seemingly with success, however, I get a little bit of rubbing in my set-up, and camber is certainly not the issue. Since one can run the 285 on a smaller wheel, I see no reason why one would choose the 10.5+15 since you can't run the big 305-sized tire that the wheel width could support.

What kind of street tires do you run now and what street tires do you think you'll run next year? What are your spring rates and rear camber? What kind of tire pressure? As you know, there is more to getting grip from a high HP Z than just tire width. New tires are a God send as well.

Yesterday was my first time autox'ing a boosted (supercharged) 350Z since my Z wasn't prepped, and it was quite different than the NA stability and power of my Green Z. I also think it served as a good teaching aid to the owner and my "student" (who is a good friend) to see what his car could really do.

fart_canon

iTrader: (20)

I am going to as soon as I turbo charge this bish!

Barnabas

iTrader: (15)

thinking something like R888 or comparable or for a street tire... Still researching tire choices.


I have toyo TR1's the rears are in pretty good shape and the fronts have some camber wear on the outer side (been flipped once)

tread is pretty decent. Camber was done at the begining of the year and was not set up for racing and since I just started to AutoX at the end of the year I have not messed with it yet. I wanna say its around -1.5 all the way around or so it was all within factory spec. soo that is also another issue. I know I need it more like -2.5r ~-3f.
tire pressure was full street (35psi)

spring rates I think are 12/10 ( I have bc racing type BR coilovers) +12 clicks front full stiff rear. I ran with full stiff front and got wayyy too much under steer so I went down to +12 and it worked much much better.

My suspension is hotchkis sways
powergrid endlinks
Cusco front A arms
Spc Camber arms and toe bolts
Kinetix adjustable traction bars

03threefiftyz

iTrader: (25)

I wouldn't use the R888's....for auto-x they are only marginally better than the top tier street tires. Tires like the star specs, etc might even be a bit quicker when temps are below 60.....

Barnabas

iTrader: (15)

ill prob just keep researching street tires then until im ready to purchase then see how stuff goes

scotts300

iTrader: (46)

I agree. I've autox'd the R888s, and I think the Star Specs that I autox'd the next month would have been faster. In my experience, the Star Specs are only about 1s off of Kumho V710s on a 40s course. They are a total cheater tire! We're actually using them on our Lemons 240Z at Buttonwillow the first weekend of December since they "meet the rules" of tread rating 190 or greater. Cheater tires I tell ya (but teams are silly not to use them!)!

03threefiftyz

iTrader: (25)

Around here STR is VERY popular....most of the competitive guys run Star Specs in the Spring and Fall.....then RS3's in the summer. You can't beat the star specs when the temps are under 70 degrees. The Rs3's are a bit quicker once the temps get above 70 though.

rich2342

iTrader: (3)

****ing Gorgeous...

What is your total set up rims/suspension/specs? I want it

lgear080

iTrader: (21)

scottsssss thanks man. was dreaming of a 305... a beautiful dream, but apparently
useless. damn.

johnrojo

Enkei RPF1s:
18x9.50 +45 with a 25mm spacer (long story) front
18x10.50 +15 back

245/40R18 Kumho Ecsta XS
315/30R18 Kumho Ecsta XS

Stock suspension; soon to be lowered

scotts300

iTrader: (46)

I think you are going to rub in the rear when you lower it. Why so small in the front, yet so large in the back? A 275/35 would be nice in the front.

johnrojo

Those wheels are going on my friends turboed 350z. We tried them on his car (lowered) and they managed to clear. As far as the front tires, it was done just to keep cost down. I was thinking of getting the same wheel set-up which is why i put them on my car (try them out ). I will more then likely go with 275 as you suggested.

scotts300

iTrader: (46)

Well in that case, you can avoid the +45 front wheel.

BTW, if he has any interest in trading that high offset 9.5 for a +22 one, let me know. I have a few sets of these, and am either going to sell one set or put one set on my 300ZXTT; however, the 300ZXTT needs a higher offset wheel.

I still think he will rub in the rear with that big tire unless he has a great roll (or fender shave) and some camber. My lowered car with 295s and 2.5^ rear camber rub on hard corners with the same 18x10.5 +15. That 315 is a monster.

johnrojo

I'll let him know. Would you be willing to sell those straight up? I may just buy 2 18x10.50 and get the front ones off of you. Those 315s are massive, which is why i like 'em.

dkmesa350z

iTrader: (41)

Why did you keep those weaksauce front fitments rather than trading for a pair of +15s?

scotts300

iTrader: (46)

Ok, please do let him know - that would be a great trade. I also have a pair of 10.5 +15s that would be a better trade for me given the other set-ups that I run. Then he could run the common 18x10.5 +15 all around!

I wouldn't sell just the two 9.5 +15s for much less than they are new, so that'd be your call; but if he doesn't go for it, I may have an entire 9.5/10.5 set-up for sale.

See the PM I sent you, there is a way for all of us to win so that you and your friend both end up with the 9.5/10.5 +15 combo and I get a pair of the high offset 9.5s for my 300ZX TT.