Tire Pressure - Losing PSI

Hello, I finally pulled the plug and picked up an amazing 2014 GRiSO with only 3,000 miles on it. The bike is losing about 2 pounds of pressure per week in the front. I have checked the tire for damage (nails/staples) and can’t see anything. I had a KTM with spoked wheels and didn’t have this issue but wanted to see if this was normal for the Guzzi? I’m thinking of taking the front wheel off and putting it in a tub of water to locate the leak. Would welcome any other suggestions. So far, I absolutely love this bike, coming from a Ducati, I can’t believe how smooth it is. Excited to get home and ride this summer.

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Nice bike can’t help with the tyre pressures..
How do you like the muffler? Good sound?

Welcome!

Check out this thread. It might apply to you.

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Thanks for the all the responses. The muffler sounds great. I was told the previous owner had some engine mapping done, so it has a nice throaty sound but is very civilized on downshifting. You can definitely wind it up and make it bark if you want, but when going through neighborhoods, you can tone it down.

Hyde73 wrote:

Hello,  I finally pulled the plug and picked up an amazing 2014 GRiSO with only 3,000 miles on it.  The bike is losing about 2 pounds of pressure per week in the front.  I have checked the tire for damage (nails/staples) and can’t see anything.  I had a KTM with spoked wheels and didn’t have this issue but wanted to see if this was normal for the Guzzi?  I’m thinking of taking the front wheel off and putting it in a tub of water to locate the leak.  Would welcome any other suggestions.  So far, I absolutely love this bike, coming from a Ducati, I can’t believe how smooth it is.  Excited to get home and ride this summer.

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I like the look of wire spokes but alas I too didn’t know about the leaky spoke nipple o ring issue prior to purchase of this fabulous machine and once I knew what the cause was I simply checked my tyre pressures every ride until it was time to fit new tyres. I took the tyre fitters a packet of biscuits and they had a coffee break while I put some sealant around each spoke head - it’s fixed!

Yup. it's the infamous stupidly designed spokes with individual O rings problem. Mine can lose up to 24psi in a day. Curiously, it leaks air less in summer.

Thanks all. Much appreciated.

Robinson_Spike wrote:

I took the tyre fitters a packet of biscuits and they had a coffee break while I put some sealant around each spoke head - it’s fixed!

I am glad I read this, I will be changing my tires tomorrow and in the process I will do the sealant around the spoke head trick then. I haven't had a problem in 5,000 miles of ownership but some PM will make me feel better.

Mine leak, especially the front. I had the spokes tightened last Monday and that has made a difference to how much air they lose. I had new tyres put on in March and I didn't realise that the local shaved apes put a tube in the rear and pulled off the tubeless valve.

Wyno - WTF? Did they fix it?

Welcome to the Ghetto, Hyde. Whereabouts in Seattle are you? Our monthly Guzzi Breakfast is every first Saturday, next one will be July 7th. A group of us gather at my house in Georgetown and ride together to Krain Corner Inn in Enumclaw. You're welcome to join us if you like. PM me for details and contact info. if interested.

Pete (Street)

PS Jellybean is a Blue Heeler/Border Collie mix.

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Geez whilst I accept the O ring on the spoke is not the perfect situation it really isn't that bad if people bother to do some periodic maintenance. Has everyone forgotten with the advent of alloy wheels that spokes need to be checked periodically.
Even if they do need to be repaired, it isn't that hard and a whole easier and safer than pumping up the tyres half way through a few hour ride.
Once fixed my experience would suggest they are quite reliable and it took 80,000 km before I needed to do any repairs on my old bike.

I've been waiting for mine to fail and nearly 40,000km later, nope.

Bike leaning up against the side of the house in all weather under a bit of the eaves.

Ridden almost daily though. Maybe that keeps the nipples alive.

Hyde 73. I asked them to put in a new tubeless valve, but it looks to me as though they haven't. I'll wait until I can get the bike up to Pete and Michael in Bungendore for the next service and I'll get them to put on the alloy wheels that Pete got from Peter Hughes' Norge. I'll put some PR 5's on then too.

To add to the good news camp - I'm 30,000 miles and 9 years into ownership and mine don't leak that I can easily pin on 'o' rings.

I hit a particularly nasty pot hole and two of mine started leaking. Standard procedure for me is to call Orwig and he suggested loosening the offending spokes then tightening them back with just enough pressure to stop the leak (used the soap detection method). By doing that I got it down to 1-2psi a week. That was good enough until the front tire was ready for replacement and then I had the o rings replaced.