PSI Increase/Decrease

Hey guys tell me what you think about this. I have been running Bridgestone 002 RS on my Gixxer 1000 and the grip is great. I took the bike to the track and lowered the psi to 30/30. After the bike came off the track I checked the tires and had a 6 psi increase for the rear and 5 psi increase for the front. So I ran them that way the whole day, never stepped out once. Then I prepare for a ride in the canyons the following weeknd and I check the psi cold before I head out and the psi is 31/31, so I let out a pound in the front and rear (30/30) to see if they will hook up like they did at the track and they were ok. I go prepare for another ride a week later and check the psi and its 31/31 again, so I let out another pound front/rear and this time after the tire heated up they felt really slick like they got to hot and the more I rode it, it felt like the rear tire was rolling over on its self. What do you guys think, I have my thoughts but wanted to get the opinions of some of the experienced guys on the thread. And no gixxer jokes, i'm a proud owner of an 04 R1 man but I just love the power of the gixxer.

I've run 2 sets of the BT002RS. I've been running 36 front and rear (07 R1). I'm 210 lbs with gear. Getting ~1800 miles out of a rear. IMHO, you are not running enough pressure. Running the tire pressure that low will cause the tires to heat up too much for street use, causing traction degradation from too much heat cycling over time.

I've run 2 sets of the BT002RS. I've been running 36 front and rear (07 R1). I'm 210 lbs with gear. Getting ~1800 miles out of a rear. IMHO, you are not running enough pressure. Running the tire pressure that low will cause the tires to heat up too much for street use, causing traction degradation from too much heat cycling over time. You might be right about not running enough pressure. I'll try running 36 front and rear the next time I go out. I was just curious how come the psi increased every time I checked it. Have you run the 002's on the track yet and if so what psi are you running.

You might be right about not running enough pressure. I'll try running 36 front and rear the next time I go out. I was just curious how come the psi increased every time I checked it. Have you run the 002's on the track yet and if so what psi are you running. Never been on a track, but if I did, I'd probably start at about 34 psi. and adjust from there.

Never been on a track, but if I did, I'd probably start at about 34 psi. and adjust from there. Thanks for the feedback.

Hey guys tell me what you think about this. I have been running Bridgestone 002 RS on my Gixxer 1000 and the grip is great. I took the bike to the track and lowered the psi to 30/30. After the bike came off the track I checked the tires and had a 6 psi increase for the rear and 5 psi increase for the front. So I ran them that way the whole day, never stepped out once. Then I prepare for a ride in the canyons the following weeknd and I check the psi cold before I head out and the psi is 31/31, so I let out a pound in the front and rear (30/30) to see if they will hook up like they did at the track and they were ok. I go prepare for another ride a week later and check the psi and its 31/31 again, so I let out another pound front/rear and this time after the tire heated up they felt really slick like they got to hot and the more I rode it, it felt like the rear tire was rolling over on its self. What do you guys think, I have my thoughts but wanted to get the opinions of some of the experienced guys on the thread. And no gixxer jokes, i'm a proud owner of an 04 R1 man but I just love the power of the gixxer. I run the 002 R version at the track and when racing. The tire pressure we use is 32 psi HOT on warmers and around 34 psi HOT straight off the track. For more rear grip the rear is sometimes dropped as low as 26 psi HOT on warmers, but still around 28 to 30 HOT straight off the track. Sometimes the tire will feel greasy if you power hard out of corners but if it isn't stepping out then you are OK, probably just laying down a little rubber onto the road...:rock

Yanking & Bankin I went to my favorite twistie today and I tried the 36/36 and the tires worked great!! Plimmer- thanks for the input. Is their a huge difference between the RS and the R?

I was just curious how come the psi increased every time I checked it. 1PSI is probably just from the ambient temp. Was the temp a bit warmer when the PSI went up? Just a thought. Geoffro

1PSI is probably just from the ambient temp. Was the temp a bit warmer when the PSI went up? Just a thought. Geoffro No it was pretty cool. My bike is always in my garage and my garage stays preety cool even when it's hot outside.

Im guessing carcass flex, either you rode slower the last time out or the road and ambient temp was down compared to before

Bridgestone 002 RS on my Gixxer 1000 and the grip is great. I took the bike to the track and lowered the psi to 30/30. After the bike came off the track I checked the tires and had a 6 psi increase for the rear and 5 psi increase for the front. So I ran them that way the whole day, never stepped out once. ^ i think you could go to 32 to 36psi for track depending on conditions (32 for cold day 36 for hot). this will reduce the tyre temperature prolonging life and making them more resistant to cooking which leads to improved and more consistant traction. with regards to street riding, when i am running DOT's on the street i often run them with less pressure in them than what i would run on the track especially in cold or wet conditions. my thinking is that a track tyre may be softer but that means it is harder to get up to operating temperature. you only want more stick when you are going faster. a sticky track tyre is designed to require constant abuse to keep it in its ideal temperature range, if it couldnt stand that constant abuse it would get cooked after a couple of laps. if you are running DOT tyres on the street you wont get them up to their operating temperature (unless you are a loose nut). DOT tyres in my experience are typically quite sensitive to temperature. i drop a couple of psi to increase carcass flex which puts more heat into the tyre for street riding, its still a compromise and you cannot rely on them to stick like they do on the track (at ideal pressures and temperatures).