this is the front passanger tire. Track is streets of willow in rosamond california. This was my first time at the track so i really was pushing the car hard. guess i need to be more smother when it comes to track driving. like i said suspension is stockb besides a rear sway bar. but i do have a gt35r full race turbo setup and i was running race gas at about 26psi of boost. probably around 450whp or so.

 

Did you notice the tire wear throughout the day, or only after you got the car home? I always inspect my tires after each session...

Generally you're better off learning on a less powerful car with less sticky tires. My recommendation would be to turn down the boost at your next track day and concentrate on being able to hit your lines, which also means using very conservative braking points. This is why I did my first track day on all-season tires ... they all took some abuse, but not as much as the pictured star spec - dayumn!

l8r)

 

Same thing happend to my star spec's after my 2nd track day with them @ Thunder hill http://yfrog.com/44starspecsj

 

^ Specs on mods and alignment? Tire pressure too.

Compress the suspension you get more negative camber. Decompress - positive. Jack up the front of the Evo to see the difference with the wheels in the air. In big fast turns, that load one side or the other, you have lots of changes to tires and suspension. Add too much power too soon. You add another force to that area of a tire.

I tracked the **** out of my Z1 and Z1*. 245/45/17. Never had this issue.

 

^
255/40/17 OEM bilstein's re valved to match Gtworx springs -2.4 front 0 toe alignment was done 2 days before the track.

power wise car makes 315/315 on a mustang dyno (stock is ~220-230) just basic bolt ons

full weight MR + passenger

tire pressure was 35 cold

 

Long, fast turns love to eat the inside of the inside front tire.

 

Ah.... I just noticed it's a 2003 too. So no front LSD. The inside front tire must have just been lighting up!

 

^good call

 

I think its more driving style. That happened to my 03 which has a shep tcase with LSD.

 

i have a stock evo 9 lsd installed in my t case so yes i do have LSD. but the suspension are just stock mr shocks and springs with a rear hotkis sway bar set on the stiffest setting

 

Where you checking them between sessions, or did this happen in one in particular?

Did it feel any different as the tire degraded? I would think you would feel that..

 

Dude, that kind of HP + stock suspension + hard driving is not a good combo. I did some serious damage to a brand new set of NT05's at my first track day. I went with the Bilsten/SpecR/RSB treatment with camber at 2 front, 1.5 rear and 0 toe and the severe edge wear is greatly diminished. Understeer is a lot better as well.


Also, check your tire pressure hot. Cold is just a starting point. I had new tires this weekend (new set of Z1's) and started at 34 for the fronts. Right front was 49 after the first session. Needless to say I started dropping pressure. Track I was on is a Nascar Roval (Road course in a tri-oval) and is left turn centric, rough on the right front.

 

I have an Evo IX and recently installed a Shep Stage 3 Tcase with Quaife LSD, night and day difference over the IX stock unit. In fact I think the IX front diff is open spider, not even LSD.

 

EVO 9'S HAVE a front lsd

only 03 and 04 evos have a open diff in the front

 

Z1 chunk a lot, they are mostly not very hot friendly. I saw at least 10 cars with this problems with thoses. Write to Dunlop to address the problem or buy something else...