Tire Pressure - 40 PSI? - Suzuki Volusia Forums : Intruder Volusia and Boulevard Forum
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post #1 of 24 (permalink) Old 01-05-2013, 08:46 PM Thread Starter
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Tire Pressure - 40 PSI?

I have been maintaining my tire pressure on my 2001 at 29 front / 36 rear as recommended by Suzuki. I have stock tires, maximum PSI 41.

I was watching Ride Like a Pro and 40 PSI was recommended all around for for best performance. Anyone running 40 PSI in OEM size tires and what are some thoughts on this?
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post #2 of 24 (permalink) Old 01-05-2013, 09:10 PM
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I can see two problems here. First of all, it's going to ride like a log truck at PSI that high. Secondly, you are dangerously close to maximum PSI. Air temperature changes and ride distance could easily put you over the maximum pressure and could cause problems.
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post #3 of 24 (permalink) Old 01-05-2013, 09:41 PM
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My book says 29 front and 33 rear for solo riding; 39 for 2up. Everything I read and my mechanic recommend 26 31/36 for the best results. He indicates that the temp, weather, etc effects the tires in such a manner as to make the lower pressure desirable.
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post #4 of 24 (permalink) Old 01-05-2013, 10:50 PM
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I'd go with the bike manufacturers recommendation. If tire pressures are too low you get heat build up and less cornering control, if pressure is too high your contact patch to the pavement decreases which for obvious reasons is no good either.

Last edited by C50TinAB; 01-05-2013 at 10:52 PM.
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post #5 of 24 (permalink) Old 01-06-2013, 02:09 AM
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I use the tire manufacturers recommended max psi and it works fine. I've been doing it since I started riding (do the same thing on cages also) and I've been riding for over 40 years.

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post #6 of 24 (permalink) Old 01-06-2013, 02:26 AM

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Ive always liked 40. Plain and simple, on the road I like hot and hard tires. No innuendo intended

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post #7 of 24 (permalink) Old 01-06-2013, 02:39 AM
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I make sure there aired up and if something feels funny I Check the presure but not often. 30psi front and about 39psi for the back for good burn out

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post #8 of 24 (permalink) Old 01-06-2013, 11:28 AM
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Originally Posted by Mr. Efficiency View Post
Ive always liked 40. Plain and simple, on the road I like hot and hard tires. No innuendo intended

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I suppose that's fine if your riding a Russian motorcycle built by Socialist labor and named after a porcelain fixture used by men who actually stand up to pee.

When I want to read a really good Harley thread, I just turn to VolusiaRiders.com
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post #9 of 24 (permalink) Old 01-06-2013, 01:06 PM
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I run my tires between 35 and 40 as the freekin' roads here in So Cal have gotten dangerous with cracks and potholes, a couple of months ago I hit a Pothole at night in a dark area that broke the front fender and dinged the edge of the rim. If the air pressure was at recommended values I probably would of had a blowout, I had the wheels checked out by a wheel specialist and all was ok, and the tires checked out ok too.

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post #10 of 24 (permalink) Old 01-06-2013, 01:09 PM
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I remember Metzler having a recommendation for inflation on their website that indicated inflation numbers that were higher than Suzuki put in the manual and on the stickers.

I went to look for it from my book marks but the recommendation is different now... ..

"Always inflate the tire to the correct pressure. Be sure to check cold inflation pressure frequently, i.e. once a week. Although most motorcyclists love to work on their bikes, many seldom remember to check their bikes tire pressures. Correct pressures are critical for safe handling. Over inflation or extreme tire pressure will impair your riding comfort and decrease the size of the contact patch of the tire with the road. Under inflation or too little air pressure will result in poor handling and the bike will be inclined to “wander”. Improper and insufficient tyre pressure will also cause rapid tire wear, an increase in fuel consumption, lower top speed, and provide less control. Remember to check the inflation pressure of your tires weekly. You will find the correct pressure in the operating manual of the motorcycle. Use METZELER’s information only as reference. Attention: When the recommended pressure has been changed for use off the public highway (race track, off-road), it must be reset to the correct value before riding on the street."

Michelin goes a little further ......

1. Modern methods of inflation allow high pressures to be reached
quickly. Where air reservoir tanks are used, we recommend that the
pressure regulator valve be set to 60 psi for the inflation of motorcycle
tires. Periodically drain your air tank to ensure a clean air supply.
2. Michelin recommends the tire pressure quoted by the motorcycle
manufacturer, except where otherwise stated.
3. When the tire is mounted, take the following precautions to avoid
trapping air between the inner tube (where applicable) and the tire
while inflating:
• push the valve into the wheel (where a tube is used).
• inflate slowly without removing the valve core.
• use the inflation pressure recommended by the motorcycle manu
4. Check inflation pressures on both tires at least once a month, before
riding, when tires are cold (at ambient temperature). Riding even for a
short distance causes tires to heat up and air pressure to increase.

Failure to maintain the correct inflation pressure may result in
improper motorcycle handling, rapid and irregular tire wear, or sudden
tire destruction.
5. For sustained high‑speed riding, front and rear tire pressures
be increased to the maximum pressure recommended
by the motorcycle
manufacturer for high-speed riding. Do not exceed the maximum
pressure indicated on the tire sidewall.
6. Increase the pressure of the rear tire to that recommended by the
motorcycle manufacturer when the motorcycle is used with a passenger
or a substantial amount of luggage.
7. The proper inflation pressures for your motorcycle tires are shown in
your motorcycle owners manual. Unless otherwise stated, these pressures
are for motorcycles ridden at normal highway speeds without
passengers. Exceeding the safe, legal speed limit is neither recommended
nor endorsed.
Inflation pressure measurements are only as accurate as your gauge.

That being the case, I do run my tires 2psi over the manual numbers. When 2up with luggage, I do check hot pressure and adjust the pressure AFTER cool down if the pressure is getting over the max on the tire side wall.

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