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Rear Tyre problems on a CBF 125


Kirky96
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Hi everyone,


Noticed that my rear wheel on my Honda CBF 125 was getting a little bit flat, so I took it to the local petrol station to inflate it. I've had the bike for a year next week, and so far had pretty much no problems with it. Anyhow I looked in the owners manual before setting off, and said to have the pressure at 29 PSI (for single passenger only), which I set the machine to and it does it automatically. I pull out of the petrol station, and straight away the rear wheel seemed to be shaking so much that the whole bike was all over the road. Pulled over, checked the wheel and it didn't seem loose or anything.


Went back to the petrol station where some kind old fella tried helping me, he had pressure reader on him and it said it the back wheel was reading 25 PSI, which was still a lot harder than what I went there with. Was advised to just leave it overnight and check on it in the morning, wondering if anyone can give me any advice on why this could be happening or what to do now?


Bike the only means of transport so I'm kinda screwed if its knakered!


Thanks in advance guys

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The pressure guages on filling station air lines can be a bit sporadic......best to have your own one to check pressures with. Have you checked round the tyre to see if there's a nail in it or a split anywhere? Could be that you've picked up a nail or screw from somewhere.

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Check to see if the tyre is fitted correctly to the rim, if you have allowed the tyre pressure go down to low and then ride on it there's a possibility that the tyre has moved on the rim and is now is not sitting correctly. Don't ride it at any speed get it check over at a tyre specialist.

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Thank guys for your advice,


Tango, I had a look this morning and could see a tiny bit of metal lodged in the tire and what looked like a very small slash - If anything these could have caused a small puncture, which I've only just noticed recently. I'm going to go out tomorrow and get a pressure gauge for the future though!


Chrissb6, I asked my neighbor to have a look (he used to have a motorbike a couple of years ago), so he had a look and a ride down the street and thought the tire has worn unevenly, so when I've inflated it there have been a couple of low spots which makes it looked egged. I managed to ride through to the Honda shop in Newcastle (Only place I know that does motorbike tires), asked them what you said about the rim and they said it was purely the tire.


So at the end of this I'm having to fork out £90 and picking it up late Tuesday, safe to say I've learnt my lesson and will checking my tire pressure regularly from now on!

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Yeah, you need to be checking your tyre pressures regularly......you have 2 patches of rubber about the size of your palms which is keeping you on the road.......and those patches will only work efficiently of they're the right shape, which is largely dependant on correct tyre pressures..... :wink:

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Good to hear your sorted. Now make mental note to yourself when you get the bike back of how it feels. I'm sure you will notice a massive difference in the ride. Stay safe

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