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09-18-2006, 07:48 PM
V,
Another way to get proper tire pressure, is to chalk the side walls of the tire, make a run and see how far up the sidewall the tire has been scrubbed. Most tires have a tire wear mark indicator or arrow. If you reach that spot, great. if you rubbed too high on the sidewall, the tire is rolling over to the sidewall and therefore the pressure is too LOW. If you are scrubbing just on the flat part of the tread, you have too much pressure. On cold days, tires will be cold and traction will be NFG, so you want to run as low a pressure as possible to scrub some heat into them. on hot Summer days, the tire will oncrease in pressure all by itself, so you want to check pressures after every run, and adjust according to the behavior of the car and how far you are scrubbing up the sidewall.
after about 5 years of AXing, you might go to an event and know what is the right pressure......that is if you do not change tire manufacturers. Unfortunately, if you WANT TO WIN, you have to show up with the BEST tires possible, and every year, manufacturers are making better and faster tires. Today, the best AX tires will run about $1200.00 for a Porsche GT-3 or 997, and will last about 50 AX runs (6 events). That's $25 bucks per run plus the entry fee. Older models that use smaller tires will cost a bit less.
In America......if you want to have fun, and win, it costs $$$$.
Happy motoring!
Another way to get proper tire pressure, is to chalk the side walls of the tire, make a run and see how far up the sidewall the tire has been scrubbed. Most tires have a tire wear mark indicator or arrow. If you reach that spot, great. if you rubbed too high on the sidewall, the tire is rolling over to the sidewall and therefore the pressure is too LOW. If you are scrubbing just on the flat part of the tread, you have too much pressure. On cold days, tires will be cold and traction will be NFG, so you want to run as low a pressure as possible to scrub some heat into them. on hot Summer days, the tire will oncrease in pressure all by itself, so you want to check pressures after every run, and adjust according to the behavior of the car and how far you are scrubbing up the sidewall.
after about 5 years of AXing, you might go to an event and know what is the right pressure......that is if you do not change tire manufacturers. Unfortunately, if you WANT TO WIN, you have to show up with the BEST tires possible, and every year, manufacturers are making better and faster tires. Today, the best AX tires will run about $1200.00 for a Porsche GT-3 or 997, and will last about 50 AX runs (6 events). That's $25 bucks per run plus the entry fee. Older models that use smaller tires will cost a bit less.
In America......if you want to have fun, and win, it costs $$$$.
Happy motoring!
JUST CALL NICK
__________________
The deer in the headlite
PCA DE instructor #200904037
__________________
The deer in the headlite
PCA DE instructor #200904037