Lumpy Tyres

popette

Hi,
Sorry if it's been posted before - I have searched and not found anything relevant.

My husband's tyres are Hutchinson Equinox - they're the ones which came on his bike (Scott CR1). They seem to have a visible lump or unevenness about them in one point, not at the valve area. They also seem to be a bit hairy :shock: They are pumped to 100psi which is correct for that tyre.
He's doing the Gran Fondo tomorrow and worried whether he should stick with them or get a new pair on before tomorrow.

What says you, bike gurus? Is it normal to see lumpy hairy tyres? He asked me but I haven't got a flipping clue but I'm sure someone out there must have an idea.

For info, he's 6ft 4in and is about 100kg if that makes any difference. Oh, and the wheels are kyserium elite.

redddraggon

If they are 23mm tyres and your husband is 100kg, I definitely think the tyre should be a little higher than 100psi, I run my 23mms quite a bit higher than 100psi and I'm a good bit lighter.

If it's a noticeble bulgle, perhaps it's a defective tyre - one of my old halfords tyre had a bulge in it, there no way I could fit it so that the bulge disappeared - so that it may be that the tyre needs replacing.

scherrit

Hi,
Most likely thing to check for it that the bead has not been properly seated- look from one side of the wheel very carefully at the rim/ tyre junction.... the tyre often has a moulding mark or similar which will show that at the bulge the tyre seems "deeper" into the rim or possibly "shallower" in the rim. check both sides. if you see some variablility, flatten the tyre and loosen the beads from the rim (ie push both sides into the rim well/centre. now slowly inflate and watch that the beads pop/crawl up to an even position on the rim. any inconsistency, deflate, wrestle the tyre about a bit and repeat. if thsi doesn't work, use a sponge to put very soapy water between the tyre and rim. inflate. shop gorrillas have been known to take a tyre up to max allowed to get the tyre to seat (sometimes with a pop!!) then go back down to desired pressure.
Good luck,
Scherrit.
www.thebikewhisperer.co.uk

popette

Cheers for your replies guys. I did show him your suggestions and he decided to do the ride with existing tyres. He retired from the race after 40miles as they were completely deformed by that stage. So my planned day in Bala with the kids & watching a bit of cycling was in fact a 5 hour car ride to betsy-coed, picking him up and taking him back to his car in Bala, eating our picnic in the car and then back off to p!ssing cheshire :roll:

allen

So my planned day in Bala with the kids & watching a bit of cycling was in fact a 5 hour car ride to betsy-coed, picking him up and taking him back to his car in Bala, eating our picnic in the car and then back off to p!ssing cheshire :roll:[/quote]


Not a happy day ! Bet the drive back was quiet