Nissan 370Z Forum - TravisJB Journal

Tire tire tire!

A friend last year ran TTB in his 350Z and did a lot of comparison testing at Mid-Ohio. He ended up deciding tire was everything. Ran most (all?) of the season on stock suspension, NISMO diff, a splitter and wing, and as wide a set of A6s as he had points for. He did a lot of testing from 245s up to the expensive extra wide 275 A6. He said the TT director couldn't believe how fast he was with that few mods at Nationals.

Have to admit, I'm a grip fiend too! Inspires confidence... especially at VIR where more tire can help a lot through the esses

SPOHN

03-07-2013 04:25 PM

Ok. I'll be at RA Match 18 and AMP May 5. But I'll make it a point to stop by when your there.

Mike	03-07-2013 06:48 PM

I'm going to that Chin event too in May!:happydance: Z Ya there!

wstar

03-07-2013 06:50 PM

Yeah maybe more tire is best, esp with your SC setup. I'm still NA and I always feel like my 295 rears are just "too much" tire half the time. I'm struggling to get 'em to push sometimes when I want 'em to.

Mike	03-07-2013 06:59 PM

295s work for me, but I run them up front too.

Shamu

04-15-2013 09:37 PM

Quote:

Originally Posted by Mike (Post 2201948)

295s work for me, but I run them up front too.

Sounds skinny to me. 315 front and 335 rear on car now. Going all solid bushings to hold everything in place.

SPOHN

04-16-2013 05:55 AM

^ lol. That's my plans after track season to replace all bushings. Buying all them next week.

wstar

04-16-2013 07:07 AM

Quote:

Originally Posted by wstar (Post 2201929)

I'm still NA and I always feel like my 295 rears are just "too much" tire half the time. I'm struggling to get 'em to push sometimes when I want 'em to.

My sentiment on this is completely reversing course now that I have better suspension. The problem wasn't too much tire, it was too much slack in the suspension of the car :)

ChrisSlicks

04-18-2013 11:37 AM

Quote:

Originally Posted by Shamu (Post 2268637)

Sounds skinny to me. 315 front and 335 rear on car now. Going all solid bushings to hold everything in place.

I ran 315/345 for 2 years. It worked well on the hot days but on the cold days the tires never came up to temperature during the session. Out in always sunny California it probably isn't an issue.

So there is new rules this year so I'm doing an about face and running 275 square BFG R1 and/or Hoosier R6.

travisjb

04-18-2013 06:34 PM

Quote:

Originally Posted by ChrisSlicks (Post 2273100)

So there is new rules this year so I'm doing an about face and running 275 square BFG R1 and/or Hoosier R6.

275 r6 square... that setup worked well for me on lower whp!

Zless@arizona

05-03-2013 03:51 PM

Rehi

Hi TravisJB! This is Greg, from Arizona, now florida...winning bidder for your car number! Glad I finally caught up with you! I gotta do a lot of reading backwards to find out what's going on with you. Looks as if you are racing in Virginia? ...a super-charged Z? Cool! Sorry about ur original thread!

Quote:

Originally Posted by travisjb (Post 2273773)

275 r6 square... that setup worked well for me on lower whp!

Zless@arizona

05-03-2013 04:29 PM

Props after a long time...

Honored, and glad to be remembered!
Thanks, TravisJB!

Quote:

Originally Posted by travisjb (Post 1042883)

^ cool, thanks

So, here's what I ended up doing with my other rides...

Keeping the F250 ! Zless/Greg will be pleased!
Bought a Honda Ruckus ! I've been driving it to work and it makes my day !
Have a 135 vert on the way ! tricked out with pretty much everything... m package, perf, comfort, HK radio, nav, etc and sport suspension that lowers it 25mm with 2x spring rate and bigger sways

Z is waiting patiently in the garage!

http://www.honda-motorcycles.info/mo...nda-Ruckus.jpg
http://content.bmwusa.com/microsite/...package_01.jpg
http://accessories.bmwusa.com/Assets...nsion_1137.jpg

Zless@arizona

05-03-2013 04:34 PM

Numbers are everything

Awesome to se that you are obtaining digital representation of invisible forces on your car. That is what it takes. I did not know that you were going to spend that much money when your project started. I'm am impressed!

Quote:

Originally Posted by travisjb (Post 1311496)

Trying to learn a bit about aero on this car... ordered a bunch of wool yarn - going to do a yarn test to determine which way air is flowing with different aero setups... also ordered four of these:

http://www.sensocon.com/images/P/Dif...sure_S3000.jpg

These read differential air pressure... going to use these to determine the optimal placement for a vent in the hood to draw air through the intercooler and radiator and out through the hood... will also use it to figure out of the side scoops are working, rear diff cooler, and how to optimize all of the above... it's going to be a lot of work, but somewhere down the road we should all benefit from the data... stay tuned for more in a couple months

travisjb

07-22-2013 12:16 PM

Received an email from SPL today re their front upper control arms...

Quote:

Hi Travis!
They are being made now! We should have them in 2-3 months :) Please check back in with us or like our Facebook page for a announcement when they are ready.

Thanks, Pat
SPL PRO SUSPENSION
(866) SPL-PART (Toll-Free Ordering)
(512) 691-9002 (Direct)
www.facebook.com/SPLParts

DR_	07-22-2013 01:01 PM

2-3 months is what they've said for the last 3 years. :(

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