Cape Cod Bob

Did some searching and can't seem to find any tire pressures on the Hoosier autox tires.
Switched to Hoosiers this year but need some help on pressures cold/hot.
Any info would be appreciated.
Thanks,

Bob

XPC5R

Depending on the sizes and wheels/suspension, 28-35 up front, 25-30 in the rear (all cold) should be a safe starting point. Then watch the scrub or pyrometer for fine tuning.

Add more air if your car rolls a lot or has poor camber (looking at your avatar, you will not have those problems). On a stiff suspension, with wide wheels, you can go even lower and pick up some more grip. My car is light, but to give you an idea, but I run my 335 rears (on 13" wheels) down around 20psi.

Cape Cod Bob

Thanks!
Tire sizes are stock C6 Z06 sizes on stock rims. Suspension is Pfadt coilovers.
Any hot tire temp suggestions?
BTW the avitar is not current as the car sits a bit lower now!
Thanks again,
Bob

bgenerous

I ran Hoosier A6's for the first time last year and found 33 up front and 30 in the back about perfect on my C5 Z06. I was really impressed with the wear, hope they do as good for you as they did me.

Cape Cod Bob

Thanks,
Should be interesting to see what they do. I figure these temps are "cold" temps. Do you remember what the hot pressures were?
Bob

XPC5R

I ususally bleed back down to the cold pressures after the first run, and they will stay pretty close after that, maybe up another pound or two hot.

rws.1

from the Hoosier Tire site https://www.hoosiertire.com/rrtire.htm


The Hoosier tires typically offer better performance with spring/shock rates higher than previous brands you may have run.

Tire Pressure Recommendations For Competition

Traditionally, Hoosier tires have often required higher pressures than other brands. This has changed with the A6/R6.

Roadrace/track applications

Vehicle size
Recommended Hot Pressure
Cold Pressure

1800-2200 lbs.
34-37+
26-31

2200-2600 lbs.
35-38+
27-32

2600-3000 lbs.
37-41+
27-32

over 3000 lbs.
38-43+
27-33


+Higher pressures will improve the performance capability but will require a more sensitive feel to take advantage of the increase.

One characteristic of the tires is the tendency to "skate" initially (when inflation pressures are correct). It is important to resist lowering the pressure to attempt to eliminate this feeling. Dropping the pressure too far may improve the "feel" of the tire however it will also lower the performance and increase the wear rate.



Autocross applications

For autocross applications, your starting pressure for the first run should be within 1-2 psi of the recommended hot pressures shown above. After the first run and each subsequent run, keep resetting the pressures back to your target hot pressures before taking the next run. This way your tires are at the proper pressure during the bulk of every run you take.