What PSI do you use? - Kawasaki Versys Forum
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post #1 of 26 (permalink) Old 07-22-2009, 04:41 PM Thread Starter
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What PSI do you use?

I have a set of Avon Storms on my V. The tires suggest 42 psi front and back. But the Versys manual suggests 34 front, 36 rear. Should I use what the tire says or what the manual suggests?
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post #2 of 26 (permalink) Old 07-22-2009, 05:29 PM
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I use 36 rear & 32 front , for normal riding . if bike is to be loaded to max weight cap, then i would use the 42 psi as per tire manufacture .


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post #3 of 26 (permalink) Old 07-22-2009, 05:37 PM
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The 42 psi you're seeing on the tires is for their maximum load rating... Stick to Versys specific 32 psi front (not 34) and 36 psi rear as recommended.
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post #4 of 26 (permalink) Old 07-22-2009, 05:45 PM
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Hi Dross,

32 front, 36 rear when cold.

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post #5 of 26 (permalink) Old 07-22-2009, 05:51 PM
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I do 42 - 42. Works well for me and I don't get near as much cupping on the front as others have.
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post #6 of 26 (permalink) Old 07-22-2009, 05:54 PM
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depends on who you are, how you ride, how much you weigh

I'd stick to either the manufacturers (bike OR tyre) recommendations
if you are 'chunkier' than average then I've heard that you should up the pressure. at present I'm running 36f 40r on roadsmarts
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post #7 of 26 (permalink) Old 07-22-2009, 05:54 PM
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32 and 36, except when riding miles and miles of gravel road.
Then I'll air them both down to around 25 psi, it really helps with stability, I find. The only caveat to that is that you really have to watch for potholes, it can easily bend a rim or pinch a tire when running tires low.

I carry a 12V slime pump to air them back up when I get back to pavement.

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post #8 of 26 (permalink) Old 07-22-2009, 06:26 PM
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For a good read;
http://www.motorcycle-usa.com/379/74...uct-Guide.aspx

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post #9 of 26 (permalink) Old 07-22-2009, 07:07 PM
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Tire manufacturer's recommended tire pressure results such as Bridgestone's are provided for guidance only. From Continental: "Motorcycle manufacturers always go into the subject of air pressure in great detail in their vehicle manuals. It is possible to find instruction on air pressure for every driving situation. In addition it is usually possible to find a sticker on the vehicle with the necessary information written on it. If you possess no tyre pressure recommendations for your motorcycle follow air pressure recommendations shown in the Continental fitment guide... As a rule, the tyre pressure for motorway riding should be 0.2 bar higher. The same also applies to a bike with a fully laden rear axle."

For optimum performance while heeled over on the track, tire manufacturers usually recommend running pressures lower than those reserved for the street. According to Michelin's Claude Leroux, increased cornering grip comes at the expense of stability and feel. Lower pressures decrease straight-line stability. With proper pressure, front tire will feel more precise and turn in quicker. You can easily overheat your tires simply riding in a straight line by running the pressure too low. Lower pressure is to ensure a large contact patch, which is created by the carcass flex... While some manufacturers recommend running the same pressures listed in the owner's manual for the bike's OE tires, a significant number-such as Metzeler and Pirelli-have proprietary pressures that should be run on particular tire/bike combinations.
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post #10 of 26 (permalink) Old 07-22-2009, 10:44 PM
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I add 5% above manufacturer's suggestion for wear, and, as mentioned, to decrease the cupping.
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post #11 of 26 (permalink) Old 07-23-2009, 06:04 PM Thread Starter
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Thanks peoples!
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post #12 of 26 (permalink) Old 09-20-2009, 06:22 PM
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I had my stock tires rebalanced the other day and the service man filled the tires to the max for the tire, around 40 psi. I also adjusted the suspension that day so that it was tighter all around. I was approaching a yellow light from about 30 mph/ 50 kph and I would normally have done a perfect stop but the rear tire fished out and I had to let up on the brakes or I'd have wiped out. I think that the rear tire pressure being too high might have played a part in my decreased stopping ability, but it also could have been caused by my tighter suspension.

Any thoughts from the more experienced riders who have precision-adjusted their tire pressure and suspension?
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post #13 of 26 (permalink) Old 09-21-2009, 12:08 AM
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There is no doubt that more pressure results in less traction, but there are so many factors involved here (not to mention that as you mentioned, you also changed the suspension settings) that it's hard to tell. It's possible that the road also had something to do with it, especially since this is in an urban setting.

You can experiment with different pressures, usually going up/down 2 psi will make a significant enough difference to tell while you are riding, but I'd recommend you go back to the stock pressure first, get a feel for the new suspension settings and after you decide whether those are good or not (and make changes if necessary), then start experimenting with pressures. Increasing or decreasing tire pressure also impacts the suspension behavior, as the tire itself absorbs significant amounts of any input before it makes it's way to the springs.

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post #14 of 26 (permalink) Old 09-21-2009, 04:59 PM
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There are a LOT of pinheads in service departments, both automotive and motorcycle, who will inflate tires to the max pressure stamped on the tire sidewall. Be very careful and check the tires before leaving.

Most small tire gauges aren't especially accurate. I still have my racing gauge that I made up with a known accurate industrial gauge and a tire chuck with an 8 inch hose. I use it at home, and have used it to calibrate the small gauge I carry on the bike.

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post #15 of 26 (permalink) Old 09-22-2009, 10:18 AM
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the storms on my bike felt good at 34f/38r, but feel fine at stock pressure, too. good tire.
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post #16 of 26 (permalink) Old 09-22-2009, 07:38 PM
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I'm running Dunlop Roadsmarts at 38 rear and 34 front....seems to work well for me @185 lbs with full gear. Hope this helps
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post #17 of 26 (permalink) Old 09-23-2009, 07:16 AM
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Here is a load index table the link from the article is not working

What is the load rating on the stock dunlop tires?

Last edited by southbark; 09-23-2009 at 07:20 AM.
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post #18 of 26 (permalink) Old 09-23-2009, 03:34 PM
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Metzlers on mine use 32 front 36 to 38 rear,it happiest there

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post #19 of 26 (permalink) Old 09-23-2009, 05:59 PM
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Fastoman shared this on tyres:

http://www.flamesonmytank.co.za/tyres.htm


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post #20 of 26 (permalink) Old 09-23-2009, 08:31 PM
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OEM tires-use bike manufacturers recommendation.
Other manufacturers tires- use their recommended pressures. These can be found either on their website or by calling their tech department.
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