Tire Pressure

RUQCK · 06-26-2003, 3:08 AM

Whats everyone's specs on tire pressure? I myself am about 220lbs..and run 36(rear) 34(front) any recommendations?

ibAdam · 06-26-2003, 7:24 AM

This is topic is kinda like the oil topics. Everyone has an opinion on it and there almost always different. Me personally, I don't ride with a passenger and have found 33 front 39 rear works for me OK. But it depends on if your doing track time, street riding or your total load weight. You can always play with the pressure and see how different psi's work for you.

Bigtoe · 06-26-2003, 7:49 AM

I guess I run the specs recommended on the bike. 36psi front and 42 psi rear. I will probably run a slightly lower psi in the rear when I get a new rear tire.

mmeacham · 06-26-2003, 4:14 PM

I am still learning but I was told the Reccommended is too high. I run 30f/29r at track, 5 higher on the street for longer wear.

Denny · 06-26-2003, 10:02 PM

32 front and rear

CanyonCarver · 06-26-2003, 10:11 PM

30/30

ratter · 06-27-2003, 5:22 AM

are these hot or cold pressures ?

Bigtoe · 06-27-2003, 7:12 AM

They should be could temp psi.

CanyonCarver · 06-27-2003, 8:49 AM

Quote:

ratter1 : are these hot or cold pressures ?

Always check 'em cold, myself.

RUQCK · 06-27-2003, 3:05 PM

think im gonna leave it how i got it. The bike seems to handle better with my weight with the pressure i have. Plus..not that you guys care..but rips wheelies easier lol.

deez · 06-27-2003, 3:08 PM

Quote:

RUQCK : think im gonna leave it how i got it. The bike seems to handle better with my weight with the pressure i have. Plus..not that you guys care..but rips wheelies easier lol.

http://misterb.speedyard.net/images/ape.gif

ER · 06-27-2003, 5:35 PM

Quote:

booth23 : Quote (RUQCK @ June 27 2003, 2:05pm)think im gonna leave it how i got it. The bike seems to handle better with my weight with the pressure i have. Plus..not that you guys care..but rips wheelies easier lol.

http://misterb.speedyard.net/images/ape.gif
I'm starting to think that you have a whole folder full of images and you just wait for the right opportunity to link one in...

ratter · 07-04-2003, 5:01 AM

Quote:

Bigtoe : They should be could temp psi.

thanks

omen137 · 07-04-2003, 6:10 AM

I run 36/36 on the road and the bike handles well and I get decent mileage out of the tyres. On the track I run 30/32.
The miss's is letting me out this weekend yeeehaaa!!!

HondaGalToo · 07-04-2003, 10:21 AM

I recently learned something from a Pirelli rep regarding tire pressures on the track. In the dry, I run 30/30 or so, which is fine. I always thought I should use those pressures when it's wet as well, to ensure proper heating of the tire. Not so! Having the pressures that low in the wet causes the rain grooves to close. You actually want to run higher pressures in the wet so the rain grooves will be open and can do their job of wicking water away. This obviously doesn't apply to racing slicks!

Chain · 07-04-2003, 10:38 AM

Quote:

HondaGalToo : I recently learned something from a Pirelli rep regarding tire pressures on the track. *In the dry, I run 30/30 or so, which is fine. *I always thought I should use those pressures when it's wet as well, to ensure proper heating of the tire. *Not so! *Having the pressures that low in the wet causes the rain grooves to close. *You actually want to run higher pressures in the wet so the rain grooves will be open and can do their job of wicking water away. *This obviously doesn't apply to racing slicks! *

You talking about the track begs the question: is the poster a track fan or street rider?

IMO, running at or close to recommended pressures front and rear offers the best combination of performance and tire life, the latter issue not being lost on we street riders.

lfg929 · 07-04-2003, 12:21 PM

Personally I think you should run between 28psi and the recommended pressures depending on what you are doing and what you are after. If you have never been to a track day and still have fairly large chicken strips then recommended pressures are probably going to be fine for you. You will get more life out of the tire that way. However, if you live close to twisty roads and are a fairly quick street rider then you may want to drop your pressures some (34psi range, give or take a couple of psi) to get yourself a little extra grip. For track days you will want to run between 28 and 32 psi depending on the conditions, again to give yourself some extra grip.

While weight certainly plays a small factor in it, it isn't a key component of what pressures you should run. I weigh 250lbs fully geared up. Before my first track day I ran recommended pressures and got 7000 miles out of my 010's but I ran a much slower pace on the street. Now I typically run 34 or 35 psi on the street and 29 or 30 psi at the track. My street tires maybe get 2000-3000 miles before they are treadless (rear always goes first) and the track tires probably don't get much more than 600-1000 miles before they are completely toast.

So, as far as what you should run, it is going to depend on 2 things in my opinion: 1) how much wear do you want out of your tires, and 2) how much grip do you want out of your tires? Higher psi's get you better life, lower gets you better grip. Pick something that suits your riding style and your budget and go with it.

jafo · 07-04-2003, 1:45 PM

32-32 summer,winter 30-30.I ran h2's all winter while commuting,I did avoid the freeway whenever possible!

HondaGalToo · 07-05-2003, 12:55 PM

yup, what lfg said. I was talking about track riding in particular, but I do the same for spirited rides on twisty roads. The only time I'm even close to the OEM pressures is doing a long trip on an interstate with luggage.

Oz · 07-05-2003, 2:28 PM

30-31 psi in both tires. Track or street.

rrfiddyf5 · 07-10-2003, 9:39 AM

on the track depends what brand tire you are running. michelin recomends 30 fr 28r, for metzler/pirelli 30 fr/30 r, donlops I believe are also 30/30 but don't know the donlops for sure. I run 34f/36r on the street as the tire will never heat up enough on the street to make the lower pressure worth the faster tire wear!!

rrfiddyf5 · 07-10-2003, 9:45 AM

on the track depends what brand tire you are running. michelin recomends 30 fr 28r, for metzler/pirelli 30 fr/30 r, donlops I believe are also 30/30 but don't know the donlops for sure. I run 34f/36r on the street as the tire will never heat up enough on the street to make the lower pressure worth the faster tire wear!! The tire pressure recomendations for the track are the same whether running street or race coumpound tires. Always cold psi

CraigB · 07-10-2003, 10:17 AM

Tire pressure changes about 1psi for a change of 10 degrees celsius.

Typical pressures quoted are cold pressures with cold being around 25 degrees celsius.

Dunlop recommends around 29-33 for front and 28-32 for rear superbike (UK dunlop) slicks. These are race pressures obviously. For Daytona they use harder dual compounds and recommend cold pressures of 36 psi rear and 34 psi front.

There is an optimum temperature for a race tire to operate at and that is usually around 75 degrees celsius. If the tire is too cold after practise laps the pressure needs to be dropped. If it is too hot the pressure needs to be increased.

This is a rule of thumb as compounds also affect temperature. Too soft equals too hot and too hard equals too cool when running typical recommended pressures.

Cal · 07-12-2003, 12:26 AM

I run 30/30 at the track and 36/38 on the road using BT012s. I'm still experimenting with track pressures, but I got good feedback and wear with 30/30 the last 2 times.