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Tire Pressures

2.5K views 25 replies 15 participants last post by  senedane  
#1 ·
What pressures are you guys running in both

street and race applications (PSI preferred)
 
#2 ·
Street honda calls for 36 PSI front ......... 42 PSI rear
 
#3 ·
Depends on the temperature for race applications..You should typically see a pressure gain of 5-7 psi from cold to hot...
 
G
#4 ·
What tires are you running? Are you using them for track or street? Believe it or not, every tire brand and model are different. when a manufacture tells you what pressure to run, they're talking about the pressure they are at when you immediate peal of the track. I called Pirelli about the optimum temperature for their CorsaIII line and they informed me that they don't recommend using temperature to gauge tire readiness, but rather pressure. Just to share that figure, it's 34.5 to 35 psi.
 
#5 ·
I am almost sure the honda rec. pressures are for two up, could be wrong.. anywho, for the track there are many variables, don't take anyones number as gospel as it may not be best for you. (track temp that day, your brand of tire, your weight, your riding style)

i personally use 30/30 it works the best for me.
 
#6 ·
hey nightslugger. what did you say the corsa III recommended tire pressures are? 34.5 to 35 both front and rear? thanks
 
#9 · (Edited)
Ok, seriously...No one tire pressure is going to work in every condition...Depending on the tire each manufacturer has reccomended settings as a starting point..Be careful they are different..Some Michelins run really low pressures in the twentys..32/30 is USUALLY a safe starting point...But for example last Mon. I started at 32/30 but it was a bit colder but still sunny..Tires weren't getting up to temp, so I dropped it down 30/28 and sure enough 5 lbs. increase..It worked perfect all day long...But 5-7 lbs. rise in pressure from cold to hot will determine if your pressures are right for the conditions..Any less drop the pressure down any more raise it up..

http://www.feelthetrack.com/tire-wear.html

For street whatever works for you..You want more mileage go higher, you want more grip go lower..Find the happy medium for you and your type of riding..There is no one magic number for everybody...
 
#12 ·
For the street you typically run staggered tire pressures with the rear being higher because you want to get better mileage out of your tires...On the track it can be staggered or not...It's just that your front tire is smaller than your rear, so many times it will get hotter than your rear..Depends on the track the way you ride etc..It doesn't have to be staggered..Run whatever pressure will get you in that 5-7 lbs. range..(for the track of course) For the street this really doesn't matter too much...When you experiment with different pressures you'll feel it...For me it was like a 35/38 with bt014s now they're worn a bit so i don't care about mileage at it's colder so they don't burn up on the highway, so it's like 35/35
 
#13 ·
garett said:
just got the bike and have dunlop qualifiers
it will be for street use, atm
I just ran with the qualifiers at the track day...Pretty good tires...Once you get em scrubbed in you can get your knee down with in the first 5 turns, later in the day even in the first turn without too much protest from the tire...Keep in mind this was after couple sessions and with the sun beating down on my tires, so they were still pretty warm...Don't think that the tires will stick like that on the street coming out of a rest area or turnout or something...I don't reccomend getting your knee down on the street anyways ;) Good tires though, real stable..
 
#16 ·
moeman said:
Street honda calls for 36 PSI front ......... 42 PSI rear
42psi is the maximum cold pressure for use when the tire is being asked to carry a maximum load. Don't take my word for it. Just read the info printed on the side of your tires.

Maximum loads only come into play if/when you ride a big 600+ pound sport-touring bike, when you're carrying a 180+ pound passenger or carry a ton of luggage.

Long story short, if you're not in max load territory then don't use the max pressure. It's bad for good tire grip on the road and thus bad for you.

For most sportbike applications I recommend 34psi front and 36psi rear. Plus or minus a few psi depending on how big/small a bike you ride or if you're going to the track.
 
G
#19 · (Edited)
The science is easy:

The tire will warm up faster if the pressure is low, which allows more carcass flex. as the air inside the tire heats up, it will increase in pressure. If you putt too much air in, the tire may not heat up properly (or take a very, very long time) and that effects near everything.

Always check your pressure the MOMENT you peel off the track. That's the pressure you want. You'll no doubt start the day with a lower pressure than what you end up with after 10 laps.
 
#20 ·
on the roads i use to use 36ft 42rr
but racing short circuit and the roads 30/30
awesome what ever the conditions.
you can raise the ft 1psi if you really push the ft.

hope this helps
 
#21 ·
Also ride 36ft and 42rt, i have it to what the book says and it has been treating me right so far. I had some experience 2 days ago when i had to go put air in my tires. I whent to the shell and instead of putting air in my tires that crap just took out, well i spent 2 bucks on it and i had to ride 2 miles on 10ft and 18rt to get to the other gas station. A tremendous change. I like having different experinces on my bike and im glad i survived that one.
 
#23 ·
Knightslugger said:
Always check your pressure the MOMENT you peel off the track. That's the pressure you want. You'll no doubt start the day with a lower pressure than what you end up with after 10 laps.
yes, it's all about setting hot pressures, not cold pressures. no one understands this in motorcycling. i've noticed all of the car racing guys say "who cares what cold pressure is, i'm only interested in hot pressures"- and they are right. i've learned a lot recently on tires talking to the tire companies.
 
#26 ·
30/30 track is a good starting point.. 34/34 is what I usually run on the street....