Griso tyres and wheels. Grrr.

AustinW

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I took the Griso for its MOT Monday this week. Local shop, they know me and can be quite pragmatic about MOTs. But, 2 minutes into the test and it’s “err MrW come and have a look at this”. Front tyre on the wrong way round, ie rotating against its markings. “It’s a fail I’m afraid, counts as a major defect”. They couldn’t swap it over there and then for lots of reasons so I rode home, whipped the wheel out and took it back next morning. And yes I did check if the hub is symmetrical, it’s not as neither the spacer nor the spindle seem to quite fit properly into the wheel hub from the other side. Anyway a couple of hours later they phoned - all done so I picked it up, refitted the wheel to the bike rode it to the workshop and a quick check of the nuts and bolts and another brake test and it had passed it’s MoT. I gave them a tenner for their trouble (they didn’t really want it but as I get free tea there it’s ok).

But the bike felt a bit weird when I rode it, which I put down to the tyre now being the right way round and I’d soon get used to it.

Scroll forward to today and I went to move the bike and it was as heavy as and as numb as - yup front tyre almost flat - 7psi in it. Feck. It’s either not been re-fitted properly or I’ve been really unlucky and got a puncture or, worst case, they’ve damaged the seals on the spoke end when changing the tyre over. I’ve blown it up to 65psi and soaped up the rim, tyre and valve and can’t see any leaks so it looks like it’s a worst case scenario and the seals on the spokes have got damaged. I haven’t got a bath or bowl big enough to get at least some of the spokes ends under water so I’m going to monitor it overnight and see how fast it’s going down.

Then what though. The MoT place is just a small workshop that does mainly MOts, tyres, and and few simple service Jobs on scoots and small older bikes. They won’t have the know how to fix the wheel and I doubt very much they’d ever admit that it could be their fault anyway. I think the Griso SE spoke ends are sealed with O rings but I have a receipt in the bike documents I got when I bought it from somewhere in Essex I think for adding a sealing system (silicon and 3m tape I think). I suppose that’s the route I will have to go down. Cast wheels from a non SE version is another option, or stump up for Kineo/Alpina or whatever aftermarket wheels. But they are mega bucks which I’m not spending on this bike.
 
You could always have a chat with them about it. They might put their hand up and admit it.
Oh I’m going to do that for sure tomorrow morning. I’m going to take a chill pill and endeavour not to get angry though. But I don’t really want them to touch anything other than maybe carefully remove the tyre for me.

Central Wheels do the “Airtight” system for £125 fitted (to a loose wheel I assume). I think I’ll go down that route unless whatever is in there is repairable. I doubt I will ever be swapping tyres again as I only intend to do very low mileage on this bike.
 
Is the tyre directional,? Only directional tyres can fail an MOT for fitment direction being incorrect
 
Is the tyre directional,? Only directional tyres can fail an MOT for fitment direction being incorrect
Yes it has a direction arrow on it. But that’s not the issue now. The tyre won’t stay up probably my due to damage to the sealing system in the wheel which itself was probably done by the guy refitting the tyre.
 
the man who swopped the tyre around will not have damaged the o'rings on the spokes. i would put money on it !
the silicon sealant and tape , may be damaged ?
leave the above in and add a tube , easiest and cheapest solution .
have you maintained the spokes ? YES it is in the handbook to oil them every now and then !
i had a couple of bikes we sold that leaked , out of the crate ...they got inner tubes fitted .

an o'ring on each nipple was always gonna be a problem in the future ...
 
I had new tyres fitted on my Guzzi recently.
Back tyre was flat the next morning.
I changed the valve, and all was good again.
You never know you might be lucky.
 
Inner tube!! Bloody brilliant. Why couldn’t I think like that. Even if the tube ever punctured the deflation should be relatively slow. I’ll still take look inside to see what’s been damaged.

I’ve only owned the bike since October so no I haven’t serviced my nipples!
 
Doh, the tube’s valve through the rim will be the worst leak in the event of a puncture. So still a rapid deflation☹️
 
Right I’m confused now. I blew the tyre up to 65psi last night. It’s lost 1psi overnight - likely just due to it being just above 0c in my garage this morning. I’ve lowered it to the recommended pressure and will monitor it today. You never know it might just be the dust cap being a close fit over the valve core🤞
 
Update…. tube fitted now but it turns out there was also a FO big thorn through the rubber. Guy couldn’t be sure it the thorn was causing a leak but it punctured the first tube he fitted so fitted another tube regardless as he’d already removed the valve.

I then decided to remove the torque arm on the swing arm final drive to paint it. This required the RH footrest and rear brake support plate to be removed. BAD decision. One bolt snapped - that I subsequently realised I didn’t actually need to remove - then a hex head on a different fastener rounded. I drilled the hex head out eventually, getting through 3 10mm drills in the process but took the plate and offending remnants of the bolt to a local engineering workshop to get that drilled out. It had been cross threaded. Anyway all done now, a M10 tap recut the cross threaded bit and with stainless bolts and nuts in place so it won’t seize up again.

Shall I risk doing the other side??🤔
 


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