My FR-S is sensitive (to tire pressure)

[chas3wba0]

Just make sure to not use an analog tire pressure gauge, or else the 1.5 psi variance will cause you to spin out and hit a curb

[Amaya]

Originally Posted by chas3wba0

Just make sure to not use an analog tire pressure gauge, or else the 1.5 psi variance will cause you to spin out and hit a curb

It's just a minor difference in feel, not "omg, I can't control the car anymore".
And the pressure gauge doesn't need to be perfectly accurate it just needs enough precision. If you check one tire twice and it read the same both times it's precise enough.
Edit: and it's not just my FRS, I have noticed it in any car that I drive regularly.

[OkieSnuffBox]

Originally Posted by babydriver

Maybe the problem is that you don't have any curves in Oklahoma, only corners. We don't have that problem west of Austin.



Seriously, dude, I've checked it several times because I thought it might be my imagination at first. I have a precision racing air gauge used to compare the tires; it is accurate to within 1/10 lb. The first time it was a three pound difference between the left and right front tires and I thought there was a problem with the steering. It was the pressure; I equalized the tires and the problem went away. On two other occasions, I have noticed a small amount of unpredictability in the car's rear end (as it enters oversteer) when the rear tire inflations are not the same. A one pound difference makes a small but noticeable difference in the behavior of the rear end.

I don't really give a shit whether you believe me or not, and there really isn't any point in debating something when you're not willing to accept its possibility in the first place. So I guess we're done.

Ahh, so now we've gone from 1psi to 3psi.


Keep up the street racing, just make sure not to spill your Monster.

[babydriver]

Originally Posted by chas3wba0

Just make sure to not use an analog tire pressure gauge, or else the 1.5 psi variance will cause you to spin out and hit a curb

This:



Variance is +/-0.1 psi

Anyway, as long as the pressure gauge is consistent with itself to within 0.1 psi, it doesn't matter if it agrees with a barometer precisely or not. I simply need to find the pressure that works best for the tires and the car and keep it there.

[DarkSunrise]

Was anyone else reminded of this classic thread from Jalopnik?

http://jalopnik.com/how-not-to-expla...s-b-1677523538



Video of the dude crashing because his right tire was 1.5 psi higher than his left:

http://jalopnik.com/this-asshat-bmw-...fk9g,pexi6me2k

[mrk1]

Originally Posted by DarkSunrise

Was anyone else reminded of this classic thread from Jalopnik?

http://jalopnik.com/how-not-to-expla...s-b-1677523538



Video of the dude crashing because his right tire was 1.5 psi higher than his left:

http://jalopnik.com/this-asshat-bmw-...fk9g,pexi6me2k

yeah that was pretty funny, just admit you messed up dont dig a big hole for yourself.

Back on topic of tire pressure I can't say I can pick out which tire is down a hair but I certainly notice the change after a track session.

[chas3wba0]

Originally Posted by DarkSunrise

Was anyone else reminded of this classic thread from Jalopnik?

http://jalopnik.com/how-not-to-expla...s-b-1677523538



Video of the dude crashing because his right tire was 1.5 psi higher than his left:

http://jalopnik.com/this-asshat-bmw-...fk9g,pexi6me2k

Yea, I can't believe nobody got my reference... nubZ

Originally Posted by chas3wba0

Just make sure to not use an analog tire pressure gauge, or else the 1.5 psi variance will cause you to spin out and hit a curb

[Gunman]

Originally Posted by babydriver

This:

Attachment 107757

Variance is +/-0.1 psi

Anyway, as long as the pressure gauge is consistent with itself to within 0.1 psi, it doesn't matter if it agrees with a barometer precisely or not. I simply need to find the pressure that works best for the tires and the car and keep it there.

Are you using a tire pyrometer to take temps across the tire, or basing this simply on driver "feel"?