tire pressure?

I'm a newbe so forgive but I can't find anything on what tire pressure I should have? I just brought a 07 ST with 4900 miles on it. It has Bridgestone's on now. Anything I should check?
Thanks

Re: tire pressure;

Manuf recommendation is 42 psi front and rear for ST1300. What pressures did you find? What tire models and manufacture date do you have on it (a 4 digit code in an oval on the sidewall)?

I've found that if loaded for a trip, a few extra psi in the rear is helpful to reduce cupping (especially if Michelin PR2's are installed).

Funny. I coulda sworn my sticker on the frame said 40F 42R (just checked last week). Would they have a different one for a 2010 than mabye for earlier bikes? I don't think the bike has changed....

In general, for most sport-touring bikes I've seen, 40/42 is widely recommended for solo, and if riding a lot dual, I'll just put in an extra PSI each. 41/43. But overall, I have always kept any ST bike 40/42 and have been fine with tires.

Alexi

Both tyre OEMs and Honda say that no matter the load (unless track day tearing) that front and rear pressures should be 42psi front and rear. Bridgestones in particular will not ecessive pressure as thet are pretty rigid already; it may cuase flattening of the centre tread which will not be good in the wet.
HH.

Thanks the reason that I ask is on my Valkyrie Honda recommended like 32lbs and you need 40/42 also.

The following is just tiddly details, but worth your awareness anyway: The Honda owner's manual recommends 42 psi front, 42 psi rear (both for North America ST1300's and European ST1300 Pans). See page 124, 125, and 212 in this 2003 scanned version.

We make our choices.

42 - it's the answer to the ultimate question of life, the universe & everything.

It's amazing how often it occurs..

http://www.independent.co.uk/life-style/history/42-the-answer-to-life-the-universe-and-everything-2205734.html

I use 42 psi. front and rear, that way I only have to remember one number.

I wouldn't go less than 42 PSI on the rear tire. The ST1300 tends to overheat the rear tire on aggressive twisties.

For the front I would run between 38-40. 38 in colder weather and 40 when it's hot. Even after insane thrashing at Palomar Mt. in San Diego the front tire only goes up around 4 PSI when set at 40 cold.

The rear goes up 10 PSI or more even when set at 42 or 43 PSI. The baby 170/60 rear is really too small of a tire for the heavy ST1300 when taking part in high speed aggressive canyon riding. Great for the city though and allows the bike to be thrown around with ease.

roxzor said:

I wouldn't go less than 42 PSI on the rear tire.

The rear goes up 10 PSI or more even when set at 42 or 43 PSI.

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I like 42- 43 in the rear and 43-44 in the front.
Coming up to 17,000 miles on both front and rear. Might have a few more miles left on the rear. No cupping or abnormal wear.
Contribute this to the correct or slightly higher pressures. Remember, your tire gauge may not be reading correctly.

I can see 43 or 44 in the rear, but I'll bet if you measure hot pressures in the front after setting it at 43 cold you'll find that they aren't warming up enough unless you are two up or fully loaded out with camping gear... Of course, if you don't ride aggressively then you could inflate to 50 PSI and it wouldn't matter... If the ambient temps are below 50 degrees then that is even more of a reason to run lower pressures in the front.

17k miles is insane. I don't believe you. Lol... I think you mean kilometers?!?!

I find I get about 5 psi rise on my tires cold to warm. About a 30 degree rise on the rear and 24 or so on the front.

roxzor said:

I can see 43 or 44 in the rear, but I'll bet if you measure hot pressures in the front after setting it at 43 cold you'll find that they aren't warming up enough unless you are two up or fully loaded out with camping gear.

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I have an Orange TPMS on board, so I see the tire pressures and temperatures accurately.
Most people think there tire pressure drops due to a small leak. I have went for over 6 months without topping up these tires. Not using a tire gauge now, so I don't release that small amount of air when I check my tires daily.
The tire pressure on the rear starts going up 1 psi just a block away from where I started and heats up fully from 40F to 80F at this time of the year. I agree with you that the front takes longer at the slightly higher pressure and may be a bit below temp than if the pressure was 2 psi lower. Front goes from 40F to 72F at this time of the year.

roxzor said:

17k miles is insane. I don't believe you. Lol... I think you mean kilometers?!?!

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62,000 kilometres new BT023 GT tires. Tires now at 89,000 kilometres. 27,000 Km's equals 16,777 miles
I even amazed myself that it is this high. No cupping on either and there is a bit of feathering on the rear. Front looks like it can go to
20,000 miles. Maybe our roads are made out of different stones or the temperature of the roads are cooler. Also maintaining the tire pressures at or slightly above 42 psi could be a contributing factor.
I'll see what I get from the same tires as they will be going on first thing next year.
I highly recommend everyone to buy a TPMS. (tire pressure monitoring system)