The Evo is very front heavy and understeer is a big issue. Thanks for the start point. I will play with pressures from there. I will probably be inclined to keep them higher and sacrifice a little grip for increased life on a street tire.

I have a very large manual gauge from Griot's. I also have a small digital gauge from Griot's as well. As far as I am able to tell, the manual gauge is very accurate and very easy to use but it is an impact tool for a compressor tank.

 

http://www.mcnews.com/mcn/technical/200511gauges.pdf

 

Interesting, I believe I have an updated version of the Griot's compressor pump tire pressure gauge. Scored a 19/20

 

I am going to start between 36-38psi hot and well see how things go tomorrow!

 

For me it all depends on the track. Mid-Ohio I can run them lower than say Putnam. Some tracks are really rough and eat up the tires. At Mid-Ohio I start with 36F and 34R.

 

For an NT05?

I was running really high like 44F 39R. I will adjust to blacktack's rec of 36-37 hot (apparently direct from Nitto) next time.

 

I just went to PIR with nt05 last friday.
They get HOT very fast. I primarily ran 33psi and it was 41psi when I was done with 20 minutes sessions. I ran like 80% of my abilities too!
I then put it down to 31psi and it got to 38 PSI, but I don't think this would be a good review cause it was raining on that session
My buddy ran 31PSI all day long and he was booking. He really liked the tires and he seemed to be liking his tire response...so there ya go. Our take

 

A common misconception on tire pressures is that alot of people use them to change handling and thats not the tires job. You should adjust tire pressure for the tires optimum grip and adjust your suspension to change the handling characteristics of the car. Thats why you spend all that hard earned $ on your ADJUSTABLE coilovers. Just my humble opinion

 

so... all those people that are playing with and adjusting tire pressures are totally doing the wrong thing? For wholesale changes, you obviously tweak your setup, but for fine tuning you have to touch the tires.

 

We start at 28psi. It grows when hot to about 36 and we bring it back to about 32. As people are saying get a feel for the car and try different things.

 

I am hardly a pro racer so I am not "one with the car" but I was running extremely high pressures last time at the track and I felt the car was a bit "ponderous". It seems to be skipping around a lot. I am headed back to the track tomorrow (mainly to watch the Red Line testing!) and will dial the pressures into 37psi hot all around. Ill let yall know how things go.

 

I gotta agree with this. Tire pressures have a ton to do with grip on various surfaces and their fine tuning is totally necessary. Assuming you had an identical track with two different materials, you would want to adjust the pressures to optimum traction like someone posted earlier. Likewise two tracks of the same material and different composition of bumps and corners would require remapping of the coilovers. They are just responses to different things.

 

What tires is this for? The tire seems to make a night and day different because Hoosiers need 40+ hot and NT05s need mid 30s and I have seem some Advans needing low 30s.