Geoff17

I thought I would be smart and buy the Hoosier R compunds as they fit the stock C6 Z06 wheels. That way I wouldn't have to deal with the tire pressure sensor issues and wheels fitting over my Stop Tech brakes etc. What I did not know is that, (this is direct from Hoosier), the target front hot pressure is 32-34 and rear is 28-30. Hoosier also said that typical hot to cold pressure difference is about 10 PSI so cold pressure is roughly 18 & 22. This will trigger the TPS system and result is low engine power-correct? If I don't use sensors this will result in the same situation-correct?

If anyone has a solution I would greatly appreciate it.

Thanks, Geoff

AU N EGL

Are you driving a C6? if your driving a C5, just hit the reset button.

PPL with the C6s and do not have TPS, do several things; bring their stock wheels with them so they can be reclibrated by having their C6 next to the stock wheels.

Build a pressure tube with new TPS in them that constaintly hold 32 psi. Program the TPS in the presure tube., strap the pressure tube in the back of the C6.

Use Nitrogin. ( N2 does not increase pressure as much as air )

Program and set the TPS to read XXXX instead of a numarical pressure.

gkmccready

???

I was thinking of just putting TPS in whatever wheels I get and buying one of the $200 programmers...

Geoff17

How do you do this?

AU N EGL

IIRC from several discsions, in the process of reprograming the TPS there will be a point at which the DIC Reads XXXX not a numarical number. Stop the programing at that point.

If this does not work, then go back to reprogram to a number.

Blitz_

I run these same tires. I have TPS turned on (use track side to reporgram the sensors). I do a cold preasure of 30psi, and I've not had any issues. Works well for me.

LOS ANGELES PI

I am running Toyo RA1, when they get real hot and trigger the DIC to warn of high wheel pressure, it does just that, warns me.

So far, it has not crippled the car or engaged active handling.

95jersey

I agree with this 100%.

It has not put the car into any disabled mode. I bought the wheel sensors and the tool and change them everytime I go the track. Once I missed programming a tire and the car worked fine even when it could not see the 4th tire.

Blitz_

The only time the redced power mode it active is if the tire preasure is too low i.e. you have a flat.

Geoff17

Blitz, if I could start out at 30 PSI or close, that would solve the problems. You are running the Hoosier R6 on stock size wheels correct? What do your hot pressures get to.

Thanks, Geoff

outnumbered

I bought the extra sensors and bought the TPS tool from Forum member Beezee. Had a tire start to go down this weekend. It was a very good safety feature to have the sensors.

I could feel the car handing very strange. On the straight I quickly checked the monitor and saw an 8lb deficit on the right front.

Geoff17

I agree with this but I have the issue that Hoosier is saying my starting pressures should be 18 & 22 PSI. I believe these low pressures will trigger a low pressure warning and reduce engine power. That is the problem I am trying to solve.

High pressure will not be a problem as Hoosier states the desired hot pressure is in the 28-34 PSI range.

gkmccready

Tire warmers? ;-)

I think just having the tires filled with _dry_ air (or nitrogen because it's pretty much guaranteed dry) would help because the pressure increase won't be so dramatic so you won't have to start the tires so low.

Geoff17

Great idea Glen, I think this could be a hot (or at least "warm") new business venture-care to invest?

Geoff17

Well duh, I figured out the answer. There is no concern running the Hoosier recommended lower pressures until the tires get hot. The warning light comes on but it does not reduce engine power until ~ 5 PSI. This information provided by my local mechanic. I then lowered 2 tires (one front, 1 rear) to 15 PSI and went for a ride. I immediately got the warnig light but I drove for ~ 5 miles and stepped on it (I was only in 2nd as I did not want to be doing triple digit speeds with these pressures) and there was no dimuntion of power.

Guess I should have tested this first. Thanks for your repsonses.