Tire Pressure... WTF?
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Road Warrior
Joined: Oct 2007
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From: Palm Beach
Tire Pressure... WTF?
Go a new set of Metz 880s a couple months ago and inflated them to 38F and 43R (they take higher pressures than stock Dunnies). However every weekend when I go out to the garage to ride they have deflated to 32F nd 38R! Never lower!
My question... WTF is the air going? The tubes are new, the straps are new and the valves are tight. If the tube(s) has a leak, they would deflate further. Why can't my tires hold the proper amount of air?
Just wondering... any insights? I hate f***ing with the tire pressures before I ride.
My question... WTF is the air going? The tubes are new, the straps are new and the valves are tight. If the tube(s) has a leak, they would deflate further. Why can't my tires hold the proper amount of air?
Just wondering... any insights? I hate f***ing with the tire pressures before I ride.
Last edited by Topspin; Aug 22, 2010 at 08:10 PM.
Tourer
Joined: Dec 2009
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Quite a few things can play with tire pressure such as the amount of moisture [humidity] in the air you service your tires with etc In my opinion Tubeless tires seem to hold their air pressure better and certainly are much easier to repair on the side of the road than tubed tires. Nitrogen will not bleed down nearly as fast as regular shop air will [ larger molecules ]. Also check valve stems for slow leakage at the center stem, i have seen many new ones leak ever so slowly, and giving a slight turn with a valve stem tool will solve this quickly.
I purchased my last HARLEY FXD over other models because it came with cast aluminum wheels and tubeless tires.I check my tires weekly,and during weather changes notice drops in tire pressure now and then etc, especially when it it turns cold.I ride a bicycle about 150 miles a week, and have to check tire pressures every 2 days.....They ALWAYS need to be serviced back up to pressure [ 90psi] every few days, its just part of riding a bicycle to me.
I check my tire pressures weekly on my motorcycles,and monthly on my cars, truck, boat trailer etc....My vehicles that have tubeless tires seem to hold air pressure better and require less frequent servicing....But i still check on a regular basis no matter what kind of tire etc.Never know when you will find a nail, staple, drill bit etc in your tire.
I purchased my last HARLEY FXD over other models because it came with cast aluminum wheels and tubeless tires.I check my tires weekly,and during weather changes notice drops in tire pressure now and then etc, especially when it it turns cold.I ride a bicycle about 150 miles a week, and have to check tire pressures every 2 days.....They ALWAYS need to be serviced back up to pressure [ 90psi] every few days, its just part of riding a bicycle to me.
I check my tire pressures weekly on my motorcycles,and monthly on my cars, truck, boat trailer etc....My vehicles that have tubeless tires seem to hold air pressure better and require less frequent servicing....But i still check on a regular basis no matter what kind of tire etc.Never know when you will find a nail, staple, drill bit etc in your tire.
Elite HDF Member
Joined: Aug 2006
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i have same prob with my metz i can lose 10 lbs in a week esp on front, i went to dealer and complained they said nitro i laughed and figuered it was just a con, did it anyway they gave it to me for no charge guess what going on three weeks no pressure change
Road Warrior
Joined: Jul 2009
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From: A house.
When I saw the title I thought, here's a good candidate for a nitro fill. I also agree that you should pick up a valve core wrench and give yours a twist to make sure they're snugged up. It is odd that they consistently drop to the same pressure. You check them weekly before you ride, but you think they won't drop any further if you left them alone for 2 weeks, or am I reading more into it that you intended?
Club Member
Joined: Jun 2007
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From: Bedford UK
Tyres are not completely air tight, regardless of what air or gas is put in them. Pure Nitrogen may be superior to good old fashioned air, but that is also likely to leak over time.
I don't check my pressures any more than once a week, or before a ride if I leave the bike for a while. Been doing that for over 40 years so guess I am not going to change now!
I don't check my pressures any more than once a week, or before a ride if I leave the bike for a while. Been doing that for over 40 years so guess I am not going to change now!
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Road Warrior
Joined: Oct 2007
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From: Palm Beach
I tightened the stems last night to **** tight. This weekend I'll bring the bike to work (car dealership) and fill the tires with Nitrogen.
Thanks for the input guys. Just frustrated that I want to ride when I want to ride... air pressure top offs are like using a condom... an interruptus!
Thanks for the input guys. Just frustrated that I want to ride when I want to ride... air pressure top offs are like using a condom... an interruptus!
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