Track forum general chit chat.

[Grillpt]

Can't argue with u there

[aboutsize14]

I would run what roast beef said of 26 cold. I was starting off a little higher for a long time and found myself at 26 cold as a there sweet spot. I believe if you check them right at pit exit you can get the accurate pressure hot. Would put you at 33-34 hot your looking for.

[b4hand]

Anyone is Texas going to COTA this weekend?

[tsk94]

Originally Posted by Exclusivs

Nitto Guys

Sweet spot 28 cold?

28 or 29 depending on the temp that day. Target hot pressure of 33-34 seems to be the optimal after a fair amount of testing.

[Exclusivs]

Originally Posted by tsk94

28 or 29 depending on the temp that day. Target hot pressure of 33-34 seems to be the optimal after a fair amount of testing.

Ran 28 cold - 35/36 hot. Never felt greasy until the end of day last session.

[OG Shark]

Hoosiers - both R7 & A7 - their recommended hot pressures still trip me up. 40-42+ for cars over 3000lbs. Does anyone here run that high? And then you see people running them down in the 29-31 hot range. I've only run towards the higher psi preferring to start out with the manufacturers recommendation at first as a baseline. I know the best way to figure it out is to experiment with it myself - but just wondering what others are doing here that run these tires. Looking at bouncing between one of the Hoosier flavors & Pirelli DH's for a bit depending on event/purpose.

[PrimeBMW]

Originally Posted by OG Shark

Hoosiers - both R7 & A7 - their recommended hot pressures still trip me up. 40-42+ for cars over 3000lbs. Does anyone here run that high? And then you see people running them down in the 29-31 hot range. I've only run towards the higher psi preferring to start out with the manufacturers recommendation at first as a baseline. I know the best way to figure it out is to experiment with it myself - but just wondering what others are doing here that run these tires. Looking at bouncing between one of the Hoosier flavors & Pirelli DH's for a bit depending on event/purpose.

I run my street car with R7 40-42 hot. Any lower and the carcass buckles/you see a wave across the tire.

[Chris_PDX]

Just picked up the E46 track car from the shop. Here's that crack with the hub off the car:

[rhyary]

Originally Posted by PrimeBMW

I run my street car with R7 40-42 hot. Any lower and the carcass buckles/you see a wave across the tire.

same here. 40 hot

[tsk94]

Originally Posted by Exclusivs

Ran 28 cold - 35/36 hot. Never felt greasy until the end of day last session.

Sounds about right. My car is probably a bit lighter then yours - assuming yours is still a street car (mine is stripped out), which would make the 1-2psi difference understandable.

[CorruptCommie]

Originally Posted by Chris_PDX

Just picked up the E46 track car from the shop. Here's that crack with the hub off the car:

How old were the hubs?

[PrimeBMW]

Originally Posted by Chris_PDX

Just picked up the E46 track car from the shop. Here's that crack with the hub off the car:

Did you get the fancy pressed in wheel studs unit? They had not been released when I had mine replaced a few weeks ago.

[Chris_PDX]

Originally Posted by CorruptCommie

How old were the hubs?

Original, most likely. A 2002 chassis with 105k miles. The last 10k miles have basically all been track miles.

[Chris_PDX]

Originally Posted by PrimeBMW

Did you get the fancy pressed in wheel studs unit? They had not been released when I had mine replaced a few weeks ago.

Yup! No more broken wheel studs now either. I'll do the rears later.

[PrimeBMW]

Originally Posted by Chris_PDX

Yup! No more broken wheel studs now either. I'll do the rears later.

That is just unfair! 😡

I guess if I think about it I'll probably replace them again sometime next spring or summer because I just wear things out that quickly.

Yay something else to spend money on 😃

[Chris_PDX]

Originally Posted by PrimeBMW

That is just unfair! 😡

I guess if I think about it I'll probably replace them again sometime next spring or summer because I just wear things out that quickly.

Yay something else to spend money on 😃

...because racecar!

[PrimeBMW]

Originally Posted by Chris_PDX

...because racecar!

The faster i go the faster things break or need replacing. Did i tell you the entire suspension every nut and bolt will be safety wired. It only took about 60 minutes for the front right wheel to develop a nasty wobble. And that is with safety nuts, loctite and proper torque. I'm lucky it didn't fall off :

[CorruptCommie]

Originally Posted by PrimeBMW

The faster i go the faster things break or need replacing. Did i tell you the entire suspension every nut and bolt will be safety wired. It only took about 60 minutes for the front right wheel to develop a nasty wobble. And that is with safety nuts, loctite and proper torque. I'm lucky it didn't fall off :

I keep losing section 1 exhaust bolts. They have become a consumable at this point.

[PrimeBMW]

Originally Posted by CorruptCommie

I keep losing section 1 exhaust bolts. They have become a consumable at this point.

Oh my entire exhaust is safety wired too.

[Bartledoo]

Originally Posted by PrimeBMW

Oh my entire exhaust is safety wired too.

Sounds like you've got a lot of safety wire. Hopefully roastbeef found you a good deal on some titanium safety wire...

[bigjae1976]

Originally Posted by PrimeBMW

I run my street car with R7 40-42 hot. Any lower and the carcass buckles/you see a wave across the tire.

What if you're under 3000 lbs?

[PrimeBMW]

Originally Posted by Bartledoo

Sounds like you've got a lot of safety wire. Hopefully roastbeef found you a good deal on some titanium safety wire...

I won't have any problem getting the proper wire. It's more about the labor to drill out each but and bolt to do it properly. Plus I have a very good relationship with AR Motorsports.