Rear tyre issues

IceDog77

Hi there

I am having a reoccurring issue with my rear tyre.

Since I bought my new bike in February I have had to change the rear inner due to it being flat 6 times. Each time I have tried to find the cause of the issue to no avail. I have checked for any sharp edging on the wheel rim, checked thorns or other foreign bodies, tyre beeding etc etc and still I can't find the issue.

After a ride I lock the bike away, and when I come to ride it a few days later the rear tyre is completely flat again.

It is driving me insane and costing me money in new inners.

I am 15.5 stone, so even at 62 PSI the rear tyre is compressed a little when I ride, where the front tyre isn't, but I am sure this cant be the only reason there might be an issue.

The wheels and tyres are the standard stock ones I got on the bike when I bought it, Whyte 529 - http://www.whytebikes.com/2013/product. ... 37&xSec=69

Has anyone got any ideas? any help would be appreciated.

Chunkers1980

Are you fixing the puncture or just putting a new tube in each time.

Fixing it will guide you to where it is happening and where to look on the tyre as if it is the same thing doing it each time you'll be fixing it in the same place each time or the reverse.

The Rookie

Even at 15.5stone you shouldn't be riding an MTB at anywhere near 62psi! Most people ride at 25/30, as you are 25% heavier than 'average' then 30-35 psi would seem sensible as a starting point!

IceDog77

Thanks guys. I have fixed a couple of the old inners, but the point of puncture on each are in different places, and I have checked the rim and inside the tyre where they occurred and found nothing.

Thanks for the tip on the PSI. Do you think that this might have something to do with it? too much weight on too high psi?

supersonic

Are the punctures on the outside of the tube? Inside?

15.5 stone is not that heavy really, but you certainly have too much pressure.

Monty Dog

Check for something embedded in the tyre - if you're refitting the tyre in a different position every time, you'll get a different puncture. After 5 punctures on one ride, I found a piece of wire embedded in a mate's tyre - you could barely feel it with your fingernail, but it was enough to puncture the tyre after a short distance. Other option is that if you are using a hard plastic rim tape - it may have moved or edge is fretting the tyres.

YeehaaMcgee

Is it the same tube? The valve core might need tightening. I've seen it a couple of times (by that, I mean, literally twice, in....... oooh, yonks of cycling)

Mindermast

You could try a new rim tape. I had a similar wheel and replace the original tape with adhesive "high pressure" tape. the "high pressure" doesn't matter for you, but that tape solved the problem on my wheel.