Region: Great Lakes/Detroit
Car #: 51
Year : 1994 Miata Posts: 401
I run lower pressures than I did on Toyos. I start the Hoosier fronts at 30 lbs and rears at 28 lbs. Hot pressures are around 38 lbs. I do know racers who start Hoosiers as low as 26 and as high as 32.
38-40 is where you want to be in most cases. More air will be faster, but will also make car a little more "free". I've run a 93 ITB Golf for 4-5 years and we are in the 40-42 psi hot after a 3 hr stint. Lower pressure may feel comfortable, but will also prematurely wear the tire faster. It may take a little time to get use to the higher pressure but it will reduce rolling resistance and you will be smoother in the long run.
The Hoosiers are FAR more tolerant of a wide pressure/temperature range than the Toyos. I've run anywhere from 36 hot to 42 hot and all that really changes on the tires is the balance. I would typically shoot for 38 hot to start and go from there. You definitely don't need to roast them to make them work though.
-------------------- Colin MacLean Flyin' MacLean Motorsports
Car #: 13
Year : 92 Posts: 2873
We have run the Hoosier SMs quite a bit on our 1.6. We like the lower end of the pressure range. I find the lower the pressure the more compliant the car is. I like 26-27 cold and figure it will gain about 6psi from there. In my experience this tire doesn't need the high pressures the RA1 does. The lower pressure will cost you in straight line speed but on technical tracks it more than makes up for it in the corners.
-------------------- ---------------- Z Brothers Racing / East Street Auto