High speed rocky desert tire pressure

[O3RM125]

Running Maxxis desert it 110/90 19 rear and Maxxis HT 100/80 21 front. First ride on them I had 17 psi. in both front and rear, on a fairly flat straight a shadow on the trail sorta concealed a half-buried rock and I tagged it good which resulted in a flat front.

Prior to the flat the bike felt great, way more traction.. I was running 100/90 19 D756 rear and Maxxis SI up front before @ 18 psi never had a flat, but I am riding a little faster/harder now.

Having a HD tube put in the front this time and was wondering where I should go with pressure on the front. Can I stay at 17 and hope the HD tube will handle it, or should I go up in pressure?

Thanks for any suggestions!

 

[Patman]

Thanks for any suggestions!

How about two? Tire balls or bib mousse.

 

[O3RM125]

At $200 Tire balls are a no way for me right now, wife nearly killed me over the new front/rear + tubes and now a new HD tube. When I got home and pointed to the flat she unhappily says "How'd that happen??!!" LOL.

Bib mousse is more of a possibility, but again would have to wait on that, maybe when this tire wears out.

Heres some shots of the terrain if that helps with suggesting a pressure:

http://picasaweb.google.com/SahraBlue/OurBackYard?feat=email#

 

[dirt bike dave]

I think 17 psi and heavy duty tubes should give you very good flat protection.

You might not have got a flat with an HD tube, but pinch flats are highly unpredictable.

Personally, I hate how my bike handles with over 15 psi, so I won't go over that, and I just take my chances (but I've got HD tubes, too).

 

[O3RM125]

Just mounted wheel back on, put in a Bridgestone Ultra HD tube and 18 psi, going riding in about an hour or so, hopefully no limping home this time! :ride:

 

[mideastrider]

How about two? Tire balls or bib mousse.

Tire balls or bib mousse will solve your problem for sure. Cost is high and this type of tire inflation system requires a lot more maintaince than tubes. Most people run a tire until until its time for a new one, never taking it off the rim unless they have a flat. Not the case with tireball's or bibs they require maintaince and work, imagine changing a tire without letting the air out first. If racing and having a flat is not an option its the way to go. If your only having a couple or three flats a year trail riding it may not be worth it.

 

[aaronnaland]

I would never have 17 psi but i dont ride fast thru lots of rocks I mostly ride the state trails here and tracks. I think Your at a good number. how you ride you have to expect a couple of flats over a season if you ride an average amount.

 

[schmanman]

naah. people ride desert all the time, there's no reason to exect more flats.

 

[aaronnaland]

naah. people ride desert all the time, there's no reason to exect more flats.

I didnt say more flats i just said flats because hes trying to avoid flats.

 

[schmanman]

oh, ok!

 

[O3RM125]

Felt what seemed like more deflection at 18 psi, or maybe it was the HD tube..

I did tag a couple of good rocks, one I thought for sure it was going to be pinched on, its hard not to where I am riding unless going pretty slow, but no flat! :cool:

Wish I had a few extra $ for a 3.4 galllon tank, local hare scrambles coming up, but I just dont have the range yet.