Airing down for gravel/dirt? - Stromtrooper Forum : Suzuki V-Strom Motorcycle Forums
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post #1 of 17 Old 08-27-2009, 01:30 PM Thread Starter
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Airing down for gravel/dirt?

If you air down for dirt/gravel, how much do you typically let out? I haven't done this, but plan on giving it a try next time I have significant distances to do off road. A related question, any thoughts on what this does to tire life. And finally, I'm near 300 lbs, am I going to destroy the tires with less air?

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post #2 of 17 Old 08-27-2009, 03:14 PM
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make your own decision.... I tried airing down... only makes me feel like I'm riding on a flat tire, I tried several pressures, I run 42r/38f everywhere except winter, below freezing, I drop 2-3 psi both front and rear



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post #3 of 17 Old 08-27-2009, 03:17 PM
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make your own decision.... I tried airing down... only makes me feel like I'm riding on a flat tire,
Same here, that's with Tourances, with different tires, results may vary.

Note that the 'Strom has Aluminum rims, airing down makes them vulnerable to damage from rocks and armadillos.

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post #4 of 17 Old 08-27-2009, 03:58 PM
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I aired down after reading threads in the past. I think it was 28 on the rear stock Trailwing. I only weight 160 and ended up flattening out the rear tire and the front wabble increased from uneven wear. That was only for a two day back road rally. Never again. I am on TKC'80s and love them on pavement or gravel fully inflated. I have a set of Heidenau K60's to go on next and for me this looks to be the perfect strom dual sport tire.
link to US distributor http://www.moto-amore.com/heidenau/n...uctsnew_b.html

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post #5 of 17 Old 08-27-2009, 04:16 PM
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airdown

i would only recomend it if you can afford to replace an expensive wheel . i pesonally can take the risk of bending a wheel

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post #6 of 17 Old 08-27-2009, 08:10 PM
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I drop to about 25 when going in rough stuff, I just leave it at street pressure for "regular" gravel (Tourances). You will get beat to death on the rough stuff with full street pressures, IMHO.

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post #7 of 17 Old 08-27-2009, 08:17 PM
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Stock air pressures. Up on the pegs. And go like heck.

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post #8 of 17 Old 08-27-2009, 08:38 PM
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Stock air pressures. Up on the pegs. And go like heck.
Before taking any of this man's advice, please consider his avatar.

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post #9 of 17 Old 08-27-2009, 09:44 PM
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Quote:
Originally Posted by Stromin'Nroman View Post
Before taking any of this man's advice, please consider his avatar.
Oh, I thought we were talking about "dirt". Now, water on the other hand.......

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post #10 of 17 Old 08-27-2009, 09:59 PM
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If you aren't doing crazy speeds down to around 28PSI works. Even around 32 PSI makes a huge difference.

Note there are tradeoffs here, just lowering the pressure isn't enough - it depends on tires as well.

I typically run a TKC-80 up front and "whatever" on the back when I know I'm doing a long dirt ride.

Last time I ended up with 34F 28R because the front had so much more grip at the front with 32PSI front & rear that the bike felt like it was going to swap ends whenever I braked.

It does help, and provided you are sensible about speed and are on reasonable dirt roads (I'm not always) the rims will be fine even at 28PSI.

The only ding I have was from hitting a washed out concrete culvert at something north of 80pkh with 28PSI in the front, almost unnoticeable - the KTM 990 chasing me needed surgery with a splitting axe to get home and a replacement rim soon after.

The DL rims are *MUCH* tougher than the standard KTM ones

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